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受欢迎的代数 >

-4.9t^2+3=0

解答

- 4.9 t^{2} + 3 = 0

解答

t = \frac{30}{7}, t = - \frac{30}{7}

+1

十进制

t = 0.78246 \dots, t = - 0.78246 \dots

求解步骤

- 4.9 t^{2} + 3 = 0

将

3

到右边

- 4.9 t^{2} = - 3

在两边乘以

10

- 49 t^{2} = - 30

两边除以

- 49

t^{2} = \frac{30}{49}

对于

x^{2} = f (a)

解为

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

t = \frac{30}{49}, t = - \frac{30}{49}

\frac{30}{49} = \frac{30}{7}

- \frac{30}{49} = - \frac{30}{7}

t = \frac{30}{7}, t = - \frac{30}{7}

作图

流行的例子

log_{x^2}(x^2+2x+1)<= 1

lo g_{x^{2}} (x^{2} + 2 x + 1) \leq 1

(5x+3)^2=(3x+5)^2

(5 x + 3)^{2} = (3 x + 5)^{2}

4 (z + 2) = 3 (z + 1)

x(x-3)(x^2+1)<= 0

x (x - 3) (x^{2} + 1) \leq 0

y^{2} + 3 y + 2 = 0