大家午安:
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1) Analyze and sketch the graph of the function f(x)= x (x+5)
2) Let f:R→R be a function and (X_0属于R).Suppose that a function f
is differentiable at X_0. Prove that f is continuous at X_0.
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3)Let R be the annular region lying between the two circles X + Y =1
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and X + Y =5 . Evaluate the integral ∫∫(X + 2Y)dA.
2 2 3 3√3
4)Let C be the arc of the circle X + Y = 9 from (3,0) to (── ,── ).
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1)画图题,但渐进线的部分我求不出来?
2)这题只要证明f函数在X_0处可微分就好了吧.
3)非线性座标变换题型,我想问之前做过的题目不是四个点就是四道方程式,
所以另u.v时很ok,但这题只有两道方程式?画出来就是一个空心硬币图形,
请问要怎令u.v?
4)求圆形周长弧长,f(x,y)是隐函数,该如何令解题方程式?
抱歉,问题有点多,但不知道观念正不正确.
还烦请版友给予指正
谢谢!