1 TAN+ X=2 2 SIN(X+Π4) A, X= +Π4 KΠ, X=±23Π +K2 Π (K∈¢) B, X= − +Π4 KΠ, X=Π3 +K2 Π (K∈¢) C, X= +Π4 KΠ, X=± +Π3 K2 Π (K∈¢) D, X= − +Π4 KΠ, X=± +Π3 K2 Π (K∈¢)+ + − <X X2 1 5 2

Toán DE THI TRAC NGHIEM 2017

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Câu 2, Giải PT:

1 tan

+

x

=

2 2 sin

(

x

+

^π

4

)

A,

^x

^{= +}

^π

₄

^k

^π

^{, x=}

^±

²

₃

^π

⁺

^k

²

^π

(

^k

^∈

^¢

)

B,

^x

^{= − +}

^π

₄

^k

^π

^{, x=}

^π

₃

⁺

^k

²

^π

(

^k

^∈

^¢

)

C,

^x

^{= +}

^π

₄

^k

^π

^{, x=}

^{± +}

^π

₃

^k

²

^π

(

^k

^∈

^¢

)

D,

^x

^{= − +}

^π

₄

^k

^π

^{, x=}

^{± +}

^π

₃

^k

²

^π

(

^k

^∈

^¢

)

+

+

−

<

x

x

2

1

5

2

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