derivative of sec(x^5+x)
Let's differentiate: ddx(sec(x5 + x))
We differentiate using: ddx(sec(f)) = ddx(f)·sec(f)·tan(f) (where f = x5 + x)
ⓘ The derivative of sec(x) is sec(x)*tan(x): ddx(sec(x5 + x)) = ddx(x5 + x)·sec(x5 + x)·tan(x5 + x)
ddx(x5 + x)·sec(x5 + x)·tan(x5 + x)
ⓘ The derivative of a sum is the sum of the derivatives: ddx(x5 + x) = ddx(x5) + 1
(ddx(x5) + 1)·sec(x5 + x)·tan(x5 + x)
ⓘ The derivative of x^n is n*x^(n-1): ddx(x5) = 5x4
(5x4 + 1)·sec(x5 + x)·tan(x5 + x)
▶Derivative:   sec(x5 + x)·tan(x5 + x)·(5x4 + 1)