f(x) = x9 + 3x7 + 64 is monotonic increasing for – | MATH - INCREASING AND DECREASING FUNCTION | SolveeIt | Solveeit

Today, August 19

Question

f(x) = x⁹ + 3x⁷ + 64 is monotonic increasing for –

A

Positive real values of x

B

Negative real values of x

C

All real values of x

D

All non zero values of x

Answer

All real values of x

Explanation

Solution

f ¢(x) = 9x⁸ + 21x⁶ ³ 0 " xĪR

f(x) is monotonic increasing for all real values of x