到仿間書局找過了，找不到答案 所以把題目po上來，麻煩大家幫我解題 如果有能力一次解下面10題者，可來信報價錢 (會先提供一些有解答的題目，做測試，看是否確實有能力) 或者有95高大詳解者，也可直接來信報價 ∞ 1.∫ (1/x)dx 1 1 2.∫ (1/x^3)dx -1 ∞ 3.∫ (1/x^2)dx 1 4.Find the partial derivatives forthe following function. (a)f(u，v)=(3u-2v)/(u^2+3v) (b)g(x，y)=(x+2)^2(y+3)^3 5.Find the total derivative of the following function. (a)y=f(x，w)，where x=g(w) (b)y=f(c，s)，where s=g(c) (c)y=f(x1，x2，w)，where x1=g(w) and x2=h(w) (d)y=f(K，L，u，v)，where K=g(u，v) and L=h(u，v) 6.Find the derivative of the following function. (a)t^3*lnt^2 (b)x^a*e^kx-c 7.Find dz and dz^2 of the following function. (a)z=f(x，y) (b)z=f(x，y，w) 8.Check z=x^2+y^2 for convexity or concavity by the derivative conditions. 9.Finf the extremes value(s) of z=2x^2+xy+4y^2+xw+w^2+2. 10.Using the Lagrange-multiplier method and find the extremum of z=x^2+y^2 subject to x+4y=2. -- http://www.wretch.cc/album/s0955068167 --

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