31^31=17069174130723235958610643029059314756044734431
write as a single number in index for
2(to the power a)x 2(to the power b) over 2 (to the power c)
How many syemitry are in a diamond
((8^n)/n)*(-1/8)^n
14.6. (1) Find all non-trivial subgroups of (Z6.+s) and hence prove.
erfbeiugkwj
5639+2783
if u=e^(ax-by)sin(ax+by) prove that (b ∂u/∂x)-(a ∂x/∂y)=2abu
(-x)(3x)(-2x)
prove that sec^4A (1-sin^4A ) -2tan^2A = 1
