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成功大學 84 年度 微積分

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121
Suppose f:RR:f(x)=0xt23+t3dt+2f : \mathbb{R} \to \mathbb{R} : f(x) = \int_0^x t^2 \sqrt{3 + t^3} dt + 2.
(i)4
Determine where ff is concave up or concave down.
(ii)2
Show that ff has the inverse function f1f^{-1}.
(iii)4
Determine the range of ff.
(iv)6
Determine the equation of the tangent line to the graph of f1f^{-1} at (2,f1(2))(2, f^{-1}(2)).
(v)4
Show that 12<f(0)<2\frac{1}{2} < f(0) < 2.
210
Evaluate the following limits.
(i)5
limxxsinxx\lim\limits_{x \to \infty} \frac{x - \sin x}{x}.
(ii)5
limki=1k1k+i\lim\limits_{k \to \infty} \sum\limits_{i=1}^k \frac{1}{\sqrt{k+i}}.
315
(i)5
For any xRx \in \mathbb{R}, find the sum of the series k=0xk(1+x)k\sum\limits_{k=0}^{\infty} \frac{x^k}{(1+x)^k}.
(ii)10
Is the improper integral 01lnx1x2dx\int_0^1 \frac{\ln x}{1-x^2} dx convergent?
415
Evaluate the following integrals.
(i)7
0111+xdx\int_0^1 \frac{1}{1+x} dx.
(ii)8
Ω(x+y)2d(x,y)\iint_\Omega (x + y)^2 d(x,y), where Ω\Omega is the parallelogram bounded by the lines x+y=0x + y = 0, x+y=1x + y = 1, 2xy=02x - y = 0 and 2xy=32x - y = 3.
515
A curve CC in the plane is described by r:[0,π]R2:r(t)=(3cost,2sint)\vec{r} : [0,\pi] \to \mathbb{R}^2 : \vec{r}(t) = (-3\cos t, 2\sin t).
(i)8
Find the area of the region enclosed by the curve CC and the xx-axis.
(ii)7
Find the work done by the force F(x,y)=(y,x)F(x,y) = (y, -x) in moving an object from (3,0)(-3,0) to (3,0)(3,0) along CC.
615
Let SS be the circular paraboloid x2+y2z=1x^2 + y^2 - z = 1. Use the gradient to find
(i)10
the direction in which zz increases most rapidly at (1,2)(1,2) and this maximum rate of increase, and
(ii)5
the parametric equations of the normal line to SS at (1,2,4)(1,2,4).
710
Suppose x,y(0,1)x, y \in (0,1) and satisfy x+y=1x + y = 1. Use the technique of Calculus to show that 2x+2y<32^x + 2^y < 3.