Hi, I'm stuck on this problem here about composite function, help is appreciated:(adsbygoogle = window.adsbygoogle || []).push({});

Let g : [a,b] -> [c,d] be Riemann integrable on [c,d] and f : [c,d] -> R is Riemann integrable on [c,d]. Prove that f o g is Riemann integrable on [a,b] if either f or g is a step function

I was able to solve the part where g is a step function but if f is a step function then I don't know how to approach this.

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# Riemann integrability of composite functions

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