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If u log x
If u log x pictures 5
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If u log
If u log x
if uu003dlog(x^2+y^2) tan inverse (y/x)
if u log x 3 y 3
if u u003d log x
if u log x 2 y 2 verify uxy uyx
if uu003dlog(x^(4)+y^(4))/(x+y) show that x(delu)/(delx)+y(del u)/(del y)u003d3
if u log x 2 y 2 prove that
if u log x 2 y 2 x y
if u log x 2 y 2 z 2 prove that
