Differentiation

👨🏻‍🏫 學術台數學

[匿名]

2009-06-12 1:39 am

y = 20 sin x cos x /( sin x + 2 cos x). Find x when y is a maximum.

更新1:

0 < x < 90 degree.

回答 (1)

STEVIE-G™

2009-06-12 5:10 am

✔ 最佳答案

As follows:

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