zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的三角函数 >

solvefor C,arctan((1/(2piR*C))/f)=0

解答

求解

C, arctan (\frac{\frac{1}{2 \cdot π \cdot R \cdot C}}{f}) = 0

解答

C \in R 无解

求解步骤

arctan (\frac{\frac{1}{2 π RC}}{f}) = 0

使用反三角函数性质

arctan (\frac{\frac{1}{2 π RC}}{f}) = 0

arctan (x) = a \Rightarrow x = tan (a)

\frac{\frac{1}{2 π RC}}{f} = tan (0)

tan (0) = 0

tan (0)

使用以下普通恒等式:

tan (0) = 0

tan (0)

tan (x)

周期表（周期为

πn

）：

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} tan (x) 0 \frac{3}{3} 13 \pm \infty - 3 - 1 - \frac{3}{3}

= 0

= 0

\frac{\frac{1}{2 π RC}}{f} = 0

\frac{\frac{1}{2 π RC}}{f} = 0

解

\frac{\frac{1}{2 π RC}}{f} = 0 : C \in R

无解

\frac{\frac{1}{2 π RC}}{f} = 0

化简

\frac{\frac{1}{2 π RC}}{f} : \frac{1}{2 π CR f}

\frac{\frac{1}{2 π RC}}{f}

使用分式法则:

\frac{\frac{b}{c}}{a} = \frac{b}{c \cdot a}

= \frac{1}{2 π RC f}

\frac{1}{2 π CR f} = 0

\frac{f ( x )}{g ( x )} = 0 \Rightarrow f (x) = 0

1 = 0

两侧不相等

C \in R 无解

C \in R 无解

作图

流行的例子

sin(x)=-2cos(x)

sin (x) = - 2 cos (x)

3sin^2(x)-4cos(x)+1=0

3 sin^{2} (x) - 4 cos (x) + 1 = 0

sin(x)-cos(2x)-1=0

sin (x) - cos (2 x) - 1 = 0

sin^2(x)=sqrt(3)

sin^{2} (x) = 3

solvefor x,c^2=a^2+b^2-2ab*cos(x)

so l v e f or x, c^{2} = a^{2} + b^{2} - 2 ab \cdot cos (x)