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受欢迎的代数 >

(7-h)^2+(3-k)^2=r^2

解答

(7 - h)^{2} + (3 - k)^{2} = r^{2}

解答

r = h^{2} - 14 h + k^{2} + 58 - 6 k, r = - h^{2} - 14 h + k^{2} + 58 - 6 k

求解步骤

(7 - h)^{2} + (3 - k)^{2} = r^{2}

交换两边

r^{2} = (7 - h)^{2} + (3 - k)^{2}

化简

(7 - h)^{2} + (3 - k)^{2} : h^{2} - 14 h + k^{2} + 58 - 6 k

对于

x^{2} = f (a)

解为

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

r = h^{2} - 14 h + k^{2} + 58 - 6 k, r = - h^{2} - 14 h + k^{2} + 58 - 6 k

作图

流行的例子

1 = t^{2}

4 x^{2} + a x + 8 x + 9 = 0

solvefor x,2x^2-x-3=0

so l v e f or x, 2 x^{2} - x - 3 = 0

1 = \frac{1}{2} \cdot 9.8 \cdot x^{2}

(y - 1)^{2} = 1