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109年 - 109 東吳大學_轉學生招生考試_數學系二年級︰微積分#110884
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3. (8 points) Write down the Taylor series of cos(x) about x = 0.
其他申論題
(a)
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(b)
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(c)
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(d)
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(a)
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(b)
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(a) f(x,y) = x sin(xy).
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(b) f(x,y)=e(x+y+1),
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6. (6 points) Suppose f(x,y, z) = x3y4z5 and x = sin(t), y = et, z = t2. Please compute
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7. (6 points) Find the directional derivative of f(a, u) = 2my-3y2at the point (x, y) = (5,5) and in the direction u = (4, -3).
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