Solve Derivative
The derivative measures the instantaneous rate of change of a function.
Formula: f′(x) = lim(h→0)[f(x+h)−f(x)] ÷ h
Keep rates, balances, prices, and time periods on the same basis. An annual rate should not be combined with a monthly period unless the formula accounts for that conversion.
Check the final amount against the starting figure and rate. A large unexpected difference often points to a period or percentage entered in the wrong form.