5a^5=62,5n=3,a^4=12

解答

5 a^{5} = 62, 5 n = 3, a^{4} = 12

a = 5 \frac{62}{5}

十进制

a = 1.65456 \dots

求解步骤

5 a^{5} = 62, 5 n = 3, a^{4} = 12

两边除以

5

a^{5} = \frac{62}{5}

对于

x^{n} = f (a)

，n 为奇数，解为

x = n f (a)

a = 5 \frac{62}{5}

2 x + y = - 6, 3 x - 2 y = 4

3 x + 5 y = 34, 2 x - y = 1

2 x - y = 3, x^{2} - y^{2} = 3

2 x - y = 4, - 3 x + 2 y = - 5

3 x + 3 y = 12, 2 x - 2 y = 4