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定义运算:x*y=x2-y2+2xy,则cos*sin的值是A.B.C.D.
试题详情
定义运算:x*y=x
2-y
2+2xy,则cos
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC2SURBVDhP1ZLREcMgCECZjJ1Yh2UYhVGogFrO
0LQ/7V3fnTmTPAEVsA/4Z0mMAAyagawpCdHQzJTJ4puyIbLl72SnE8KUhAx6SY0xI4ZEMduk5Clg
pcVO8iij0JkipDkX5ilFlOdO1rvvbgXchd/xa6leQzdCiucbviGVQ+zvzntq33z2V/VSUp1CItRJ
lZetMvEINzUVzq4YXKVB7Smnlc66Gik79bo7X7kO8jgjp0938FPJ7AE18l+z+pChnwAAAABJRU5E
rkJggg==
)
*sin
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAkAAAAjCAYAAABGpiBAAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAC2SURBVDhP1ZLREcMgCECZjJ1Yh2UYhVGogFrO
0LQ/7V3fnTmTPAEVsA/4Z0mMAAyagawpCdHQzJTJ4puyIbLl72SnE8KUhAx6SY0xI4ZEMduk5Clg
pcVO8iij0JkipDkX5ilFlOdO1rvvbgXchd/xa6leQzdCiucbviGVQ+zvzntq33z2V/VSUp1CItRJ
lZetMvEINzUVzq4YXKVB7Smnlc66Gik79bo7X7kO8jgjp0938FPJ7AE18l+z+pChnwAAAABJRU5E
rkJggg==
)
的值是( )
A.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEfSURBVFhH7ZZLEoMgDEA5FwuO456bsOYgbDmI
C46ShgB+Rmk1OLCobwZFqjwSqCjgBCHEpdJKVd6DV77jIPea2qhonxtvECwoocCGfJ25IPegFyHW
8bdb/mXgHHkIsH3G65tyIg6aFflKsIqX9jZ5AKsa5vyJyNPCEaByL3EKaEBnZTfImtxN+YEpN32R
I7zUV+TOOaoYKUCamerf5LR6n5LnM6QMpOjr8jj3x05+c2HOJ5TG6LdySjNep8IQ53VS+tgmbSef
jQQhDd3Ug4MlRj9MHhkq7wUGuS6GnoXkdBzEK2eSdjvWRoc0ycvbr78cX5va+hGRY7q1xeOAtHtd
NpjectzPV1lnee3TqXxa3YG/4IiBf7V/lrfxygcA8AGwqfdE99oG5gAAAABJRU5ErkJggg==
)
B.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFESURBVFhH7ZbBFYMgDECZywPjeGcTzwzilUE8
MEqaRKpSDZXQ6sX/Hq3Syk8IDzRwgDHmVGtFlF/BI8/YyYPjPm4upM4KogdrLPiY7hMn5AHcIsRr
/K3KvwSukccI22eCE+QokYOioFWZr0Rv5Wn/nzyCt19q/u/M54VjwKZRqAQc0FHLIpHkY58e6FNX
QY6IU6/JfBxHvhg6A90w8XVJTpKfydM3zDMwZy/Lqfb7QZjWmvcopey3cp5mvJ+bIC6R1sl7jG2A
mXwaOjDdwH+6gp2Fsr9NTtwqvwpMcl0MVzaW8+dNPPI6aIt918/67LyvoV5OO9ayTdG2iQHI+2qR
ankMIcuUt19l9u01l065EzTLxXe6E7TJs/rX0yCns93hktOjlgenONs/UMlphWezXXyLkamWH7+x
6qa/bcE18shvAOAFUK7wdW3IuCcAAAAASUVORK5CYII=
)
C.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFUSURBVFhH7ZdBsoMgDEA5lwuO456buOYgbjlI
FxwlJZH65ddYSQl14ZuhVTsDjyQINSDAGHOqfYtYrge3nJQ2csHRM2ou5IcVRA/WWPAx32cayAVw
q1C6Tr9V+a0T05CLEbZ9BsfIJQleGielErk/ord8Wn8nF8HbDzX368gthW3A5lEwxSS81wpTqdw8
5g7H/OBALsGmViNy8zzT9zQYGKYHXR/JoUQ3uRWK4BI9Xg5r730QQrvmxiSF0dvKURrT/dIYsSNy
nb762E6gSu4xDWCGiTrpQfUoGL3LyiHd5M6/i/rzMQS70h0ajU2fF+WWk6Ijh1vYq36sL857NbSX
wzf+uspxW0qCwlXfXC6GUESKtjdh9PRrjjulnEBdjv1PcQJduaL+6lGUw7OdS0tCjppccIKz3T9U
5HCFFtk8PAXzNJfbP+XI0qu7IL7klpNyYTmAJ6D7Vri3Ez+JAAAAAElFTkSuQmCC
)
D.
相关试题
-
定义运算:x*y=x2-y2+2xy,则cos
*sin
的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFSSURBVFhH7ZYxDoUgDIZ7LgeO485NnDkIKwd5
A0fpKwgqUYSCwUUTE2NKv/ZvKQBePACANe/VWs4/yME5TlptP3iinKt38hi594A0fJWtQgEClU2X
VshuUG5A+qbAWPwt8Ba4tXgM2Egm3Cfrgm6BH5SySiCw0o6Lu+AWlQh7fzw8ZOAbB1CEznElyA6j
JMhc5noODuZN4FO3d0ufgWutvetlApyWn/++g6PrXrb0pZp7Bdbs83BX+3PXljd+CU4eZqqny/4I
9x2+HTQN4NAn0cdRtGTI/JYJYVruZS+nWW1xmnAu+9uaV7suG1aM17KTVotLeKsz7jpSuO7W8rSd
31XcaJ+0/+CNaq6nHXvaBlqX7HH6jYfT2JTKvJE5yS0VXa9ekN3IeMCMhtN5vtd4MDx3dYpXK862
6ep2fKPme3aDZU9lfRXOqfDZtrPmH7xNgT+wqfdECMWPmwAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFqSURBVFhH7ZZBEsMgCEU5VxYeJ3tvkrUHydaD
dOFRqFhrtYoVk3SVzHQmkxEefCgC2HgAAEd+LVvJN+DgEiezZ294oRzVu3is/vSAtnKVnUEFCo0r
TQdkt6gT0L/7wET8FPgM3DnMA7aagXsIHxQFPQPPlHJGIXCE6+AOjYr//f/DY/qhcQBV7BwqATuM
iiA52fc1OliTwFW3j0g/I/u+78H1tgAu2yO89+BI3duSfgaekgoKvLLn4VT7umuD0SG4t199PSn7
HB46PF00DLg3dmKfvH3kohVD5rEtCMvWl10+31iLasJR9t2aXwn/2XBXw0/033XlFR7bWs4+FxT+
V5Ytzg2XqZ9vNsoU973EkVx2mlhfmw17x/+IRAx31haZhvE7mb0YXiXD3XID+h+Gszvd5fCi/gO0
ryMHMqe7XaOVM5PFNNzqibv9jMypw8v9sLez89KIM29vrHPyi+EHSlyZ3vAz1Rz29QRQrvB1eo8E
GgAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVFhH7ZexscMgDIaZywXjuGcT1wzilkFS
MIqCeDwCcURAQXEK+853LhD++H8hhALGo5SCnpcxdRWiOBMg2Dce1l8uuGDNHOWceeSgceOOewta
abC+Dp0A58BkoPAd8nGILy9MAs57KBfsDAEXIGhoXJQEXOGEtxoURXAenAerU+37PbgkX0xsBTpl
NlpMFutqEVxb9zX9YM0Gtuocaa2Erfu+R6htUbBst/jdLMK4+15ZKwGX5YoK/qlHw2HuHXddDBKF
C/OvIZ9QvRIu2pgbAQKsVZZTnv7PUYo+VIRv2wJq2dq2jp8PZMQQHM6C6l0HP+Z2fy2a6FfnVG9t
7el4JcbEqtC5iFOGXXBc2WWUKztjbat+bwR0PhxW/KfOmOzx3pBOh/POVUrF442p3nS4gxhUl9Lh
rzgceac4Ha7Kvw6apyGCymFvZ8CNM+UIMThnGL3dN5TDHVrfX1p3Vlra6cq97nJ49k6H+yDFDqEX
HFfNn1buDqD7VrgWc5jHAAAAAElFTkSuQmCC
)
D.
-
定义运算:x*y=x2-y2+2xy,则cos
*sin
的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFSSURBVFhH7ZYxDoUgDIZ7LgeO485NnDkIKwd5
A0fpKwgqUYSCwUUTE2NKv/ZvKQBePACANe/VWs4/yME5TlptP3iinKt38hi594A0fJWtQgEClU2X
VshuUG5A+qbAWPwt8Ba4tXgM2Egm3Cfrgm6BH5SySiCw0o6Lu+AWlQh7fzw8ZOAbB1CEznElyA6j
JMhc5noODuZN4FO3d0ufgWutvetlApyWn/++g6PrXrb0pZp7Bdbs83BX+3PXljd+CU4eZqqny/4I
9x2+HTQN4NAn0cdRtGTI/JYJYVruZS+nWW1xmnAu+9uaV7suG1aM17KTVotLeKsz7jpSuO7W8rSd
31XcaJ+0/+CNaq6nHXvaBlqX7HH6jYfT2JTKvJE5yS0VXa9ekN3IeMCMhtN5vtd4MDx3dYpXK862
6ep2fKPme3aDZU9lfRXOqfDZtrPmH7xNgT+wqfdECMWPmwAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFqSURBVFhH7ZZBEsMgCEU5VxYeJ3tvkrUHydaD
dOFRqFhrtYoVk3SVzHQmkxEefCgC2HgAAEd+LVvJN+DgEiezZ294oRzVu3is/vSAtnKVnUEFCo0r
TQdkt6gT0L/7wET8FPgM3DnMA7aagXsIHxQFPQPPlHJGIXCE6+AOjYr//f/DY/qhcQBV7BwqATuM
iiA52fc1OliTwFW3j0g/I/u+78H1tgAu2yO89+BI3duSfgaekgoKvLLn4VT7umuD0SG4t199PSn7
HB46PF00DLg3dmKfvH3kohVD5rEtCMvWl10+31iLasJR9t2aXwn/2XBXw0/033XlFR7bWs4+FxT+
V5Ytzg2XqZ9vNsoU973EkVx2mlhfmw17x/+IRAx31haZhvE7mb0YXiXD3XID+h+Gszvd5fCi/gO0
ryMHMqe7XaOVM5PFNNzqibv9jMypw8v9sLez89KIM29vrHPyi+EHSlyZ3vAz1Rz29QRQrvB1eo8E
GgAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVFhH7ZexscMgDIaZywXjuGcT1wzilkFS
MIqCeDwCcURAQXEK+853LhD++H8hhALGo5SCnpcxdRWiOBMg2Dce1l8uuGDNHOWceeSgceOOewta
abC+Dp0A58BkoPAd8nGILy9MAs57KBfsDAEXIGhoXJQEXOGEtxoURXAenAerU+37PbgkX0xsBTpl
NlpMFutqEVxb9zX9YM0Gtuocaa2Erfu+R6htUbBst/jdLMK4+15ZKwGX5YoK/qlHw2HuHXddDBKF
C/OvIZ9QvRIu2pgbAQKsVZZTnv7PUYo+VIRv2wJq2dq2jp8PZMQQHM6C6l0HP+Z2fy2a6FfnVG9t
7el4JcbEqtC5iFOGXXBc2WWUKztjbat+bwR0PhxW/KfOmOzx3pBOh/POVUrF442p3nS4gxhUl9Lh
rzgceac4Ha7Kvw6apyGCymFvZ8CNM+UIMThnGL3dN5TDHVrfX1p3Vlra6cq97nJ49k6H+yDFDqEX
HFfNn1buDqD7VrgWc5jHAAAAAElFTkSuQmCC
)
D.
-
定义运算:x*y=x2-y2+2xy,则cos
*sin
的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEfSURBVFhH7ZZLEoMgDEA5FwuO456bsOYgbDmI
C46ShgB+Rmk1OLCobwZFqjwSqCjgBCHEpdJKVd6DV77jIPea2qhonxtvECwoocCGfJ25IPegFyHW
8bdb/mXgHHkIsH3G65tyIg6aFflKsIqX9jZ5AKsa5vyJyNPCEaByL3EKaEBnZTfImtxN+YEpN32R
I7zUV+TOOaoYKUCamerf5LR6n5LnM6QMpOjr8jj3x05+c2HOJ5TG6LdySjNep8IQ53VS+tgmbSef
jQQhDd3Ug4MlRj9MHhkq7wUGuS6GnoXkdBzEK2eSdjvWRoc0ycvbr78cX5va+hGRY7q1xeOAtHtd
NpjectzPV1lnee3TqXxa3YG/4IiBf7V/lrfxygcA8AGwqfdE99oG5gAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFESURBVFhH7ZbBFYMgDECZywPjeGcTzwzilUE8
MEqaRKpSDZXQ6sX/Hq3Syk8IDzRwgDHmVGtFlF/BI8/YyYPjPm4upM4KogdrLPiY7hMn5AHcIsRr
/K3KvwSukccI22eCE+QokYOioFWZr0Rv5Wn/nzyCt19q/u/M54VjwKZRqAQc0FHLIpHkY58e6FNX
QY6IU6/JfBxHvhg6A90w8XVJTpKfydM3zDMwZy/Lqfb7QZjWmvcopey3cp5mvJ+bIC6R1sl7jG2A
mXwaOjDdwH+6gp2Fsr9NTtwqvwpMcl0MVzaW8+dNPPI6aIt918/67LyvoV5OO9ayTdG2iQHI+2qR
ankMIcuUt19l9u01l065EzTLxXe6E7TJs/rX0yCns93hktOjlgenONs/UMlphWezXXyLkamWH7+x
6qa/bcE18shvAOAFUK7wdW3IuCcAAAAASUVORK5CYII=
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFUSURBVFhH7ZdBsoMgDEA5lwuO456buOYgbjlI
FxwlJZH65ddYSQl14ZuhVTsDjyQINSDAGHOqfYtYrge3nJQ2csHRM2ou5IcVRA/WWPAx32cayAVw
q1C6Tr9V+a0T05CLEbZ9BsfIJQleGielErk/ord8Wn8nF8HbDzX368gthW3A5lEwxSS81wpTqdw8
5g7H/OBALsGmViNy8zzT9zQYGKYHXR/JoUQ3uRWK4BI9Xg5r730QQrvmxiSF0dvKURrT/dIYsSNy
nb762E6gSu4xDWCGiTrpQfUoGL3LyiHd5M6/i/rzMQS70h0ajU2fF+WWk6Ijh1vYq36sL857NbSX
wzf+uspxW0qCwlXfXC6GUESKtjdh9PRrjjulnEBdjv1PcQJduaL+6lGUw7OdS0tCjppccIKz3T9U
5HCFFtk8PAXzNJfbP+XI0qu7IL7klpNyYTmAJ6D7Vri3Ez+JAAAAAElFTkSuQmCC
)
D.
-
定义运算:x*y=x2-y2+2xy,则cos
*sin
的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFSSURBVFhH7ZYxDoUgDIZ7LgeO485NnDkIKwd5
A0fpKwgqUYSCwUUTE2NKv/ZvKQBePACANe/VWs4/yME5TlptP3iinKt38hi594A0fJWtQgEClU2X
VshuUG5A+qbAWPwt8Ba4tXgM2Egm3Cfrgm6BH5SySiCw0o6Lu+AWlQh7fzw8ZOAbB1CEznElyA6j
JMhc5noODuZN4FO3d0ufgWutvetlApyWn/++g6PrXrb0pZp7Bdbs83BX+3PXljd+CU4eZqqny/4I
9x2+HTQN4NAn0cdRtGTI/JYJYVruZS+nWW1xmnAu+9uaV7suG1aM17KTVotLeKsz7jpSuO7W8rSd
31XcaJ+0/+CNaq6nHXvaBlqX7HH6jYfT2JTKvJE5yS0VXa9ekN3IeMCMhtN5vtd4MDx3dYpXK862
6ep2fKPme3aDZU9lfRXOqfDZtrPmH7xNgT+wqfdECMWPmwAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFqSURBVFhH7ZZBEsMgCEU5VxYeJ3tvkrUHydaD
dOFRqFhrtYoVk3SVzHQmkxEefCgC2HgAAEd+LVvJN+DgEiezZ294oRzVu3is/vSAtnKVnUEFCo0r
TQdkt6gT0L/7wET8FPgM3DnMA7aagXsIHxQFPQPPlHJGIXCE6+AOjYr//f/DY/qhcQBV7BwqATuM
iiA52fc1OliTwFW3j0g/I/u+78H1tgAu2yO89+BI3duSfgaekgoKvLLn4VT7umuD0SG4t199PSn7
HB46PF00DLg3dmKfvH3kohVD5rEtCMvWl10+31iLasJR9t2aXwn/2XBXw0/033XlFR7bWs4+FxT+
V5Ytzg2XqZ9vNsoU973EkVx2mlhfmw17x/+IRAx31haZhvE7mb0YXiXD3XID+h+Gszvd5fCi/gO0
ryMHMqe7XaOVM5PFNNzqibv9jMypw8v9sLez89KIM29vrHPyi+EHSlyZ3vAz1Rz29QRQrvB1eo8E
GgAAAABJRU5ErkJggg==
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAF4SURBVFhH7ZexscMgDIaZywXjuGcT1wzilkFS
MIqCeDwCcURAQXEK+853LhD++H8hhALGo5SCnpcxdRWiOBMg2Dce1l8uuGDNHOWceeSgceOOewta
abC+Dp0A58BkoPAd8nGILy9MAs57KBfsDAEXIGhoXJQEXOGEtxoURXAenAerU+37PbgkX0xsBTpl
NlpMFutqEVxb9zX9YM0Gtuocaa2Erfu+R6htUbBst/jdLMK4+15ZKwGX5YoK/qlHw2HuHXddDBKF
C/OvIZ9QvRIu2pgbAQKsVZZTnv7PUYo+VIRv2wJq2dq2jp8PZMQQHM6C6l0HP+Z2fy2a6FfnVG9t
7el4JcbEqtC5iFOGXXBc2WWUKztjbat+bwR0PhxW/KfOmOzx3pBOh/POVUrF442p3nS4gxhUl9Lh
rzgceac4Ha7Kvw6apyGCymFvZ8CNM+UIMThnGL3dN5TDHVrfX1p3Vlra6cq97nJ49k6H+yDFDqEX
HFfNn1buDqD7VrgWc5jHAAAAAElFTkSuQmCC
)
D.
-
定义运算:x*y=x2-y2+2xy,则cos
*sin
的值是( )
A.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAEfSURBVFhH7ZZLEoMgDEA5FwuO456bsOYgbDmI
C46ShgB+Rmk1OLCobwZFqjwSqCjgBCHEpdJKVd6DV77jIPea2qhonxtvECwoocCGfJ25IPegFyHW
8bdb/mXgHHkIsH3G65tyIg6aFflKsIqX9jZ5AKsa5vyJyNPCEaByL3EKaEBnZTfImtxN+YEpN32R
I7zUV+TOOaoYKUCamerf5LR6n5LnM6QMpOjr8jj3x05+c2HOJ5TG6LdySjNep8IQ53VS+tgmbSef
jQQhDd3Ug4MlRj9MHhkq7wUGuS6GnoXkdBzEK2eSdjvWRoc0ycvbr78cX5va+hGRY7q1xeOAtHtd
NpjectzPV1lnee3TqXxa3YG/4IiBf7V/lrfxygcA8AGwqfdE99oG5gAAAABJRU5ErkJggg==
)
B.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB8AAAAkCAYAAABxE+FXAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFESURBVFhH7ZbBFYMgDECZywPjeGcTzwzilUE8
MEqaRKpSDZXQ6sX/Hq3Syk8IDzRwgDHmVGtFlF/BI8/YyYPjPm4upM4KogdrLPiY7hMn5AHcIsRr
/K3KvwSukccI22eCE+QokYOioFWZr0Rv5Wn/nzyCt19q/u/M54VjwKZRqAQc0FHLIpHkY58e6FNX
QY6IU6/JfBxHvhg6A90w8XVJTpKfydM3zDMwZy/Lqfb7QZjWmvcopey3cp5mvJ+bIC6R1sl7jG2A
mXwaOjDdwH+6gp2Fsr9NTtwqvwpMcl0MVzaW8+dNPPI6aIt918/67LyvoV5OO9ayTdG2iQHI+2qR
ankMIcuUt19l9u01l065EzTLxXe6E7TJs/rX0yCns93hktOjlgenONs/UMlphWezXXyLkamWH7+x
6qa/bcE18shvAOAFUK7wdW3IuCcAAAAASUVORK5CYII=
)
C.![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACcAAAAkCAYAAAAKNyObAAAAAXNSR0IArs4c6QAAAARnQU1BAACx
jwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAFUSURBVFhH7ZdBsoMgDEA5lwuO456buOYgbjlI
FxwlJZH65ddYSQl14ZuhVTsDjyQINSDAGHOqfYtYrge3nJQ2csHRM2ou5IcVRA/WWPAx32cayAVw
q1C6Tr9V+a0T05CLEbZ9BsfIJQleGielErk/ord8Wn8nF8HbDzX368gthW3A5lEwxSS81wpTqdw8
5g7H/OBALsGmViNy8zzT9zQYGKYHXR/JoUQ3uRWK4BI9Xg5r730QQrvmxiSF0dvKURrT/dIYsSNy
nb762E6gSu4xDWCGiTrpQfUoGL3LyiHd5M6/i/rzMQS70h0ajU2fF+WWk6Ijh1vYq36sL857NbSX
wzf+uspxW0qCwlXfXC6GUESKtjdh9PRrjjulnEBdjv1PcQJduaL+6lGUw7OdS0tCjppccIKz3T9U
5HCFFtk8PAXzNJfbP+XI0qu7IL7klpNyYTmAJ6D7Vri3Ez+JAAAAAElFTkSuQmCC
)
D.
-
定义一种运算S=a⊗b,运算原理如图所示,则cos45°⊗sin15°+sin45°⊗cos15°=________.
-
定义一种运算S=a⊗b,运算原理如图所示,则cos45°⊗sin15°+sin45°⊗cos15°=________.
-
定义集合运算:A⊙B={z|z=xy,x∈A,y∈B},设集合A={-1,0},B={sinα,cosα},则集合A⊙B的所有元素之和为( )
A.1
B.0
C.sinα+cosα
D.-sinα-cosα
-
定义运算a*b=a2-ab-b2,则sin
*cos
=________.
-
定义运算a*b=a2-ab-b2,则sin
*cos
=________.