Differentiate both sides of the equation.

The derivative of with respect to is .

Since is constant with respect to , the derivative of with respect to is .

Apply basic rules of exponents.

Rewrite as .

Multiply the exponents in .

Apply the power rule and multiply exponents, .

Multiply by .

Differentiate using the Power Rule which states that is where .

Move to the left of .

Rewrite the expression using the negative exponent rule .

Combine terms.

Combine and .

Combine and .

Combine and .

Combine and .

Move to the left of .

Move to the left of .

Move to the left of .

Move the negative in front of the fraction.

Reform the equation by setting the left side equal to the right side.

Replace with .

Find dF/dr F=(GmM)/(r^2)