- #1

transgalactic

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prove that for u(x)=max(f(x),g(x))

and v(x)=min(f(x),g(x))

there is one sided derivatives

??how to put mim ,max functions into the formula of derivative formula??

[itex]f'(x)_+ = \lim_{h \to 0^+} \frac {f(x + h) - f(x)}h[/itex] (one-sided derivative...from the right)

[itex]

f'(x)_- = \lim_{h \to 0^-} \frac {f(x + h) - f(x)}h

[/itex]

(one-sided derivative... from the left)