What is the range of π(π₯)=5+β2+7x?
**the 2+7x is entirely under radical**
f(x) = 5+β(2+7x)
since the root is never negative, f's minimum value is f(-2/7) = 5
since f(x) increases, the range is [5,β)
**the 2+7x is entirely under radical**
since the root is never negative, f's minimum value is f(-2/7) = 5
since f(x) increases, the range is [5,β)