Mathematics 1 Deneme Sınavı Sorusu #1230072

Which of the following functions is monotone increasing in interval (-?, +?) | x ?0?


f(x)=x6

f(x)=2x3

f(x)=-2x4

f(x)=5x2

f(x)=10x8


Yanıt Açıklaması:

f(x)=x3

f '(x)=3x2>0 for all values of x other than x=0.

For all other functions f '(x)<0 for (-?,0) and f '(x)>0 for x>0.

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