Question

find the value of x such that f(x)=x^2+2x-5 is an increasing function.​

Answer 1

Answer:

f(x)=x²+2x-5 : f'(x) = 2x + 2 f(x) is an increasing function, if f'(x) > 0 :: 2x + 2 > 0 .: 2x > -2 Thus, f(x) is an increasing function for x > -1, i.e., (-1,00)