Re: [討論] 關於微積分的公式
consider this triangle
/|
√(1+x^2) / | x
/ _|
/θ||
1
1 x
so, cosθ = --------- sinθ = --------- tanθ = x
√(1+x^2) √(1+x^2)
and then, use them to solve triangle integral problems.
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※ 編輯: FrankLP 來自: 222.76.206.114 (11/08 13:36)
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11/09 15:08, , 1F
11/09 15:08, 1F
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