Question

let C be the differentiable at then the length in the interval a<=t<=b of C is the number​

Answer 1

Answer:

If the range of f is given by the interval (a , +infinity), we can write the following inequality 

f(x) > a

add - 4 to both sides on the inequality to obtain 

f(x) - 4 > a - 4

The last inequality suggests that the range of f(x) - 4 is (a - 4, +infinity)

Hope This Helps :)