(1×1)-tan×(-tan) evaluate it by Determinants

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

What is 32+4 x (16 x 1/2) -2 show your work}

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).