線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

1.
Find the average value of F(X/Y) =XY over the quarter circle
x^2 +y^2≦1 in the first quadrant.
2.
Evaluate F(x,y) = ∫_0^∞▒(e^(-xt)-e^(-yt))/t dt for x> 0, y:> O
3.
找出17x^2+12xy+8y^2=100上離原點最遠的座標
(這題有辦法用微積分做嗎?)
4.
Find \frac{\partial w}{\partial x} at the point (x,y,z)=(2,-1,1) if w=x^2+y^2+z^2 and z^3-xy+yz+y^3=1
這題題目有截圖可以看http://i.imgur.com/rbruCvT.jpg
5.
Two sides of a triangle are 10cm and 15cm, and are increasing at 3 cm /sec and 4 cm/ sec, respectively, which the included angle is 60° and decreasing at 0.5 rad/sec·
Is the third side increasing or decreasing? at what rate?

不好意思問題有點多，請幫我附上過程喔
謝謝

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