3. Suppose that C(x) and S(x) are two functions such that C'(x) = -S(x) and S'(x) = C(x). Prove that C2(x)+S2(x) is constant.

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Chia Chung

詳解 #5992366

2023/12/22

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2. (10%) The lengthwidth w, and height h of a box change with time. At a certain instant the dimensions are= Im and w= h= 2 m, and and ware increasing at a rate of 2 m/s while h is decreasing at a rate of 3 m/s. At that instant find the rates at which the length of a diagonal are changing. (The length of diagonal

3. Suppose that C(x) and S(x) are two functions such that C'(x) = -S(x) and S'(x) = C(x). Prove that C²(x)+S²(x)
is constant.

詳解 (共 1 筆)

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