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Question

Mathematics Question on Differential equations

A function f(x)f(x) is a differentiable for all x[1,2]x \in [1,2] such that f(x)<2|f'(x) | < 2 . Which of the following options can be true ?

A

f(1)=9,f(2)=13f(1) = 9, f(2) = 13

B

f(1)=4,f(2)=6f(1) = 4, f(2) = 6

C

f(1)=3,f(2)=2f(1) = -3, f(2) = -2

D

f(1)=7,f(2)=10f(1) = -7, f(2) = -10

Answer

f(1)=3,f(2)=2f(1) = -3, f(2) = -2

Explanation

Solution

$\left|f' \left(x\right)\right|