maths and stat問題.........

2009-02-22 11:34 pm
H(X)=ln(X^2+5)/ln3X,求它的導數 係(d/dx)個課.....
仲有ln(x+y)=xy,求dy/dx

回答 (1)

2009-02-23 10:44 pm
參考: Physics king


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