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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: Nghiệm của phương trình tan (2x-π/4) = – √ 3

Toán Lớp 11: Nghiệm của phương trình
tan (2x-π/4) = – √ 3

Comments ( 2 )

  1. tan(2x-\pi/4)= -\sqrt{3}
    <=> tan(2x-\pi/4)= tan(-\pi/3)
    <=>2x-\pi/4 =-\pi/3+k\pi (k in ZZ)
    <=> 2x = $-\dfrac{\pi}{12}$ +k\pi (k in ZZ)
    <=>x = $-\dfrac{\pi}{24}$  +k\pi/2 (k in ZZ)
     

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222-9+11+12:2*14+14 = ? ( )

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