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Question Number 86552 by M±th+et£s last updated on 29/Mar/20

$$proethat$$$$f\left(x\right)=x+\left[x\right]$$$$increaseinR$$

Commented by mathmax by abdo last updated on 29/Mar/20

$$f^{{}^{\prime }}\left(x\right)=1because\left[x\right]\in Z\Rightarrow fisincreasingatR$$

Commented by M±th+et£s last updated on 29/Mar/20

$$thankyousir$$

Commented by mathmax by abdo last updated on 30/Mar/20

$$youarewelcome.$$

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