prove f(x)= x^15+6 is increasing on the interval: I= (-‡,‡)

Question

prove f(x)= x^15+6 is increasing on the interval: I= (-‡,‡)

Anu · Answer

find the derivative:

f'= 15x^14

this function is always positive (graph if you don't believe me) because any number to an even power must be 0 or greater.

thus since the derivative is always positive, the graph of f (x) is always increasing

:P

prove f(x)= x^15+6 is increasing on the interval: I= (-�‡,�‡)