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人気のある三角関数 >

sqrt(3)sin(x)-2sin(x)cos(x)=0

解

3 sin (x) - 2 sin (x) cos (x) = 0

解

x = 2 πn, x = π + 2 πn, x = \frac{π}{6} + 2 πn, x = \frac{11 π}{6} + 2 πn

+1

度

x = 0^{\circ} + 36 0^{\circ} n, x = 18 0^{\circ} + 36 0^{\circ} n, x = 3 0^{\circ} + 36 0^{\circ} n, x = 33 0^{\circ} + 36 0^{\circ} n

解答ステップ

3 sin (x) - 2 sin (x) cos (x) = 0

因数

3 sin (x) - 2 sin (x) cos (x) : sin (x) (3 - 2 cos (x))

3 sin (x) - 2 sin (x) cos (x)

共通項をくくり出す

sin (x)

= sin (x) (3 - 2 cos (x))

sin (x) (3 - 2 cos (x)) = 0

各部分を別個に解く

sin (x) = 0 or 3 - 2 cos (x) = 0

sin (x) = 0 : x = 2 πn, x = π + 2 πn

sin (x) = 0

以下の一般解

sin (x) = 0

sin (x)

2 πn

循環を含む周期性テーブル:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} sin (x) 0 \frac{1}{2} \frac{2}{2} \frac{3}{2} 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} sin (x) 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2}

x = 0 + 2 πn, x = π + 2 πn

x = 0 + 2 πn, x = π + 2 πn

解く

x = 0 + 2 πn : x = 2 πn

x = 0 + 2 πn

0 + 2 πn = 2 πn

x = 2 πn

x = 2 πn, x = π + 2 πn

3 - 2 cos (x) = 0 : x = \frac{π}{6} + 2 πn, x = \frac{11 π}{6} + 2 πn

3 - 2 cos (x) = 0

3

を右側に移動します

3 - 2 cos (x) = 0

両辺から

3

を引く

3 - 2 cos (x) - 3 = 0 - 3

簡素化

- 2 cos (x) = - 3

- 2 cos (x) = - 3

以下で両辺を割る

- 2

- 2 cos (x) = - 3

以下で両辺を割る

- 2

\frac{- 2 cos ( x )}{- 2} = \frac{- 3}{- 2}

簡素化

cos (x) = \frac{3}{2}

cos (x) = \frac{3}{2}

以下の一般解

cos (x) = \frac{3}{2}

cos (x)

2 πn

循環を含む周期性テーブル:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

x = \frac{π}{6} + 2 πn, x = \frac{11 π}{6} + 2 πn

x = \frac{π}{6} + 2 πn, x = \frac{11 π}{6} + 2 πn

すべての解を組み合わせる

x = 2 πn, x = π + 2 πn, x = \frac{π}{6} + 2 πn, x = \frac{11 π}{6} + 2 πn

グラフ

人気の例

sin (x) = \frac{33}{80}

3sin(x)+5=-2sin(x)

3 sin (x) + 5 = - 2 sin (x)

solvefor a,s(t)=tan(at+pi)

so l v e f or a, s (t) = tan (a t + π)

0 = sec (x) tan (x)

sin(x-pi/2)tan(x)=sin(x)

sin (x - \frac{π}{2}) tan (x) = sin (x)