ja

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

人気のある三角関数 >

9sec^2(x)-9=0

解

9 sec^{2} (x) - 9 = 0

解

x = 2 πn, x = π + 2 πn

+1

度

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

解答ステップ

9 sec^{2} (x) - 9 = 0

置換で解く

9 sec^{2} (x) - 9 = 0

仮定:

sec (x) = u

9 u^{2} - 9 = 0

9 u^{2} - 9 = 0 : u = 1, u = - 1

9 u^{2} - 9 = 0

9

を右側に移動します

9 u^{2} - 9 = 0

両辺に

9

を足す

9 u^{2} - 9 + 9 = 0 + 9

簡素化

9 u^{2} = 9

9 u^{2} = 9

以下で両辺を割る

9

9 u^{2} = 9

以下で両辺を割る

9

\frac{9 u ^{2}}{9} = \frac{9}{9}

簡素化

u^{2} = 1

u^{2} = 1

x^{2} = f (a)

の場合, 解は

x = f (a), - f (a)

u = 1, u = - 1

1 = 1

1

規則を適用

1 = 1

= 1

- 1 = - 1

- 1

規則を適用

1 = 1

= - 1

u = 1, u = - 1

代用を戻す

u = sec (x)

sec (x) = 1, sec (x) = - 1

sec (x) = 1, sec (x) = - 1

sec (x) = 1 : x = 2 πn

sec (x) = 1

以下の一般解

sec (x) = 1

sec (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} sec (x) 1 \frac{2 3}{3} 22 Undefined - 2 - 2 - \frac{2 3}{3} 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} sec (x) - 1 - \frac{2 3}{3} - 2 - 2 Undefined 22 \frac{2 3}{3}

x = 0 + 2 πn

x = 0 + 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

sec (x) = - 1 : x = π + 2 πn

sec (x) = - 1

以下の一般解

sec (x) = - 1

sec (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} sec (x) 1 \frac{2 3}{3} 22 Undefined - 2 - 2 - \frac{2 3}{3} 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} sec (x) - 1 - \frac{2 3}{3} - 2 - 2 Undefined 22 \frac{2 3}{3}

x = π + 2 πn

x = π + 2 πn

すべての解を組み合わせる

x = 2 πn, x = π + 2 πn

グラフ

人気の例

4tan(x)-7=3tan(x)-6

4 tan (x) - 7 = 3 tan (x) - 6

2 sin^{2} (x) + 1 = 0

sin(x+pi/4)-sin(x-pi/4)=0

sin (x + \frac{π}{4}) - sin (x - \frac{π}{4}) = 0

solvefor x,arcsin(y)=arcsin(x)+((pi))/4

so l v e f or x, arcsin (y) = arcsin (x) + \frac{( π )}{4}

18sin^2(x)-9sin(x)=0

18 sin^{2} (x) - 9 sin (x) = 0