If f−1(x)=kx−f(x)∀x∈R for a strictly increasing f and k a constant, then what can be said about f?
I think the answer is of the form f(x)=x+c, for some c∈R. Any hints. Thanks beforehand
How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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