所屬科目:研究所、轉學考(插大)-微積分
1 Lemniscate (x2 + y2)2 = x2 -y2 At the point (x,y)= dy/dx=?
2. If x3+y3= 3xy, then x + y≤max = ?
3. The probability density function of an exponential distribution is f(x) = if x ≧ 0, f(x) = 0 if x < 0. Find the expected value E(x) = ?
4.f(x) = = ?
5. f(x) = 1/(x2 - x-2) = Taylor series ==?
7. = ?
8. Find the area of the surface z = xy, x2 + y2 ≦ 1.
10. Polar coordinate x = r cosθ , y = r sineθ. Cardioid r = 1 - sinθ . At the point (x,y)=(1,0) d2y/dx2=?