Question

For what value of x,f(x)=3x²+12x+5 will be minimum or maximum. And also find that value.​

Answer 1

Answer:

maximum exist at x= -1 , f(-1) = 8

minimum exist at 2,-2 , f(2) = -19 , f(-2) = -3

range €(-19,8)

Step-by-step explanation:

Solution is in this picture .

___________________

Hope it helps !