`y = 4(sec(x))^2` Find the derivative of the function.

Expert Answers
hkj1385 eNotes educator| Certified Educator

`y = 4sec^2(x)`

`dy/dx = 4*2*sec(x)*sec(x)*tan(x) `

`or, dy/dx = 8sec^2(x)tan(x)`

` `Note:-

1) If y = sec(x) ; then dy/dx = secx*tanx