D)56
If I read correctly. 4 ft wide X 2 is 8
And did 5 + 2 is 7
8x7 is 56
There fore it’s D
Not an expert, take with a grain of salt
Hello,
y=sin²(cos(2x))
y'=2*sin(cos(2x))*cos(cos(2x))*(-sin(2x)*2)
= -4*sin(cos(2x))*cos(cos(2x))*sin(2x)
About 1 minute if you're saying it fast, and about 2 minutes if you're saying it slow.
Hope this helped☺☺