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tmua.fyi Mock Paper 2 · Q19

Paper 2Logic & proofTrigonometry

For which of these functions is it true that f′(x)>0f'(x)>0 for all real xx?

I: f(x)=x3f(x)=x^3.

II: f(x)=exf(x)=e^x.

III: f(x)=x+sin⁡xf(x)=x+\sin x.

Anone of them
BI only
CII only
DIII only
EI and II only
FII and III only
GI, II and III
HI and III only

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