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How function f(x) = (tan x) – x is an always increasing function?

How function f(x) = (tan x) – x is an always increasing function?

Grade:12

1 Answers

Jitender Singh IIT Delhi
askIITians Faculty 158 Points
7 years ago
Ans:
f(x) = tanx - x
f^{'}(x) = sec^{2}x - 1 = tan^{2}x\geq 0
So, f(x) is always increasing.
Thanks & Regards
Jitender Singh
IIT Delhi
askIITians Faculty

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