The Leibniz formula for states that or The following procedure uses the Lebniz formula to prove that Find the incorrect step.
Step 1 - Termwise, add to the LHS of the formula, and then subtract it at the end again, to keep the value constant at . Doing so, we get
Step 2 - We can see that so
Step 3 - Simplifying,we get We subtract from both sides to obtain But this means that !