solvefor x,F= k/(x^2)

解答

求解

x, F = \frac{k}{x ^{2}}

x = \frac{k}{F}, x = - \frac{k}{F}; F \neq = 0

求解步骤

F = \frac{k}{x ^{2}}

在两边乘以

x^{2}

F x^{2} = k

解

F x^{2} = k : x = \frac{k}{F}, x = - \frac{k}{F}; F \neq = 0

x = \frac{k}{F}, x = - \frac{k}{F}; F \neq = 0

\frac{5}{x + 3} = \frac{7}{2 x + 3}

\frac{3}{x} = \frac{4}{3}

\frac{2 x ^{2} + x - 15}{x + 3} = 4

\frac{2 x}{x - 1} + \frac{5}{2 x} = 2

\frac{2}{x - 1} + \frac{3}{x - 1} = 0