幾個題目
之前po過的題目
但沒人幫我解出來
希望有人幫我解答~感激不盡!
(很多題~希望能耐心的看完~拜託)
1.Let f(x)=sim x/x^2 -x ,how many asymptotes for the grath of y=f(x)is
tanx-sinx
2. lim ------------
x->∞ x^3
3. lim[e^x + x]^1/x
x->0
f(x)
4.If f is a quadratic function such that f(0)=1 and ∫ ----------- dx is a
x^2(x+1)^3
rational function,find the value of f'(0)=?
5. u(x_1,x_2,x_3....x_n)=(x_1^2+x_2^2+....+x_n^2)^k,where n>2.If
n d^2u
Σ ----- = 0 for some (x_1,x_2....x_n)≠ (0,0,....O),then k=?
i=1 dx_i^2
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◆ From: 220.142.24.90
※ 編輯: gghh711 來自: 220.142.24.90 (07/09 19:15)
※ 編輯: gghh711 來自: 220.142.24.90 (07/09 19:16)
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07/09 21:49, , 1F
07/09 21:49, 1F
→
07/09 22:00, , 2F
07/09 22:00, 2F
推
07/09 22:16, , 3F
07/09 22:16, 3F
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07/09 22:21, , 4F
07/09 22:21, 4F
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