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Question

What is the condition for a function y = f(x) to be a strictly increasing function.


A

x1>x2f(x1)>f(x2)

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B

x1>x2f(x1)=f(x2)

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C

x1>x2f(x1)f(x2)

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D

None of these

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Solution

The correct option is A

x1>x2f(x1)>f(x2)


We know from the definition, that a strictly increasing function is a function which increases on increasing the values of x. I.e. y values or f(x) values increases on increasing the x values. That is

x1>x2f(x1)>f(x2)


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