Business Calculus
f′(x)f^{\prime}\left(x\right) is positive and f′f^{\prime}′(x)^{\prime}\left(x\right) is zero
f′(x)f^{\prime}\left(x\right) is zero and f′f^{\prime}′(x)^{\prime}\left(x\right) is positive
f′(x)f^{\prime}\left(x\right) is positive and f′f^{\prime}′(x)^{\prime}\left(x\right) is negative
f′(x)f^{\prime}\left(x\right) and f′f^{\prime}′(x)^{\prime}\left(x\right) are both zero