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If the function f(x) increases in the in...

If the function `f(x)` increases in the interval `(a , b),a n dvarphi(x)` `[f(x)]^2` , then `varphi(x)` increases in `(a , b)` `varphi(x)` decreases in `(a , b)` we cannot say that `varphi(x)` increases or decreases in `(a , b)dot` none of these

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