log_{81}(5)=x

解答

lo g_{81} (5) = x

x = lo g_{81} (5)

十进制

x = 0.36624 \dots

求解步骤

lo g_{81} (5) = x

交换两边

x = lo g_{81} (5)

so l v e f or x, 3 (x + 5 - y) + 3 x = 12

4 - 2 y = 7 y + 13

so l v e f or g, A = 2 π r g

so l v e f or x, y - 1400 = 56 (x + 26)

\frac{2 x}{3} - \frac{1}{2} = \frac{1}{3} (x - \frac{7}{3})