问题
填空题
实数x,y满足x2=2xsin(xy)-1,则x2010+6sin5y=______.
答案
(x-sin(xy))2+cos2(xy)=0
∴x=sin(xy) 且 cos(xy)=0
∴x=sin(xy)=±1
∴siny=1 xsin(xy)=1
x2010+6sin5y=7.
故答案为:7.
实数x,y满足x2=2xsin(xy)-1,则x2010+6sin5y=______.
(x-sin(xy))2+cos2(xy)=0
∴x=sin(xy) 且 cos(xy)=0
∴x=sin(xy)=±1
∴siny=1 xsin(xy)=1
x2010+6sin5y=7.
故答案为:7.