determine the general solution of cos2X -7cosX -3=0​

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determine the general solution of cos2X -7cosX -3=0​

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Yến Oanh 3 years 2021-08-01T03:51:18+00:00 1 Answers 47 views 0

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  1. Euphemia
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    2021-08-01T03:53:14+00:00
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    Answer:

    x=2pi/3 +2pi n, 4pi/3 +2pi n for all integar of n.

    Step-by-step explanation:

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )