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Let f:[0,,∞)rarr[0,,∞)and g:[0,,∞)rarr[0...

Let f:[0,,∞)`rarr`[0,,∞)and g:[0,,∞)`rarr`[0,,∞) be non increasing and non decreasing functions respectively and h(x) =g(f(x)).
If h(0)=0 .Then show h(x) is always identically zero.

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