Does the following relation always hold?

Given two functions $$f_1(x)=g_1(x)+h(x)$$ and $$f_2(x)=g_2(x)+h(x)$$ I know that $f_1(x)$ and $f_2(x)$ are monotone increasing. If $g_2(x)<g_3(x)<g_1(x)$, then is it true that $$f_3(x)=g_3(x)+h(x)$$ is also monotone increasing?


EDIT: I forgot to mention that $h(x)$ is also monotone increasing.






via Recent Questions - Mathematics - Stack Exchange http://math.stackexchange.com/questions/293537/does-the-following-relation-always-hold

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