Question

derivative of f(x)=4sqrt(x)

Answer 1

Rewrite it as 4x^(1/2) and use the usual rule for polynomials.

Answer 2

Rewrite it as 4*x^(1/2)

Take the derivative means you -1 from the exponent while multiplying it by the exponent.

So (1/2)*4*x^(-1/2)

Answer 3

Which simplifies to 2/sqrt(x)