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受欢迎的代数 >

solvefor U,A=18X^2-27XU^2

解答

求解

U, A = 18 X^{2} - 27 X U^{2}

解答

U = i \frac{3 X A - 18 X ^{2}}{9 X}, U = - i \frac{3 X A - 18 X ^{2}}{9 X}; X \neq = 0

求解步骤

A = 18 X^{2} - 27 X U^{2}

交换两边

18 X^{2} - 27 X U^{2} = A

将

18 X^{2}

到右边

- 27 X U^{2} = A - 18 X^{2}

两边除以

- 27 X; X \neq = 0

U^{2} = - \frac{A - 18 X ^{2}}{27 X}; X \neq = 0

对于

x^{2} = f (a)

解为

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

U = - \frac{A - 18 X ^{2}}{27 X}, U = - - \frac{A - 18 X ^{2}}{27 X}; X \neq = 0

化简

- \frac{A - 18 X ^{2}}{27 X} : i \frac{3 X A - 18 X ^{2}}{9 X}

化简

- - \frac{A - 18 X ^{2}}{27 X} : - i \frac{3 X A - 18 X ^{2}}{9 X}

U = i \frac{3 X A - 18 X ^{2}}{9 X}, U = - i \frac{3 X A - 18 X ^{2}}{9 X}; X \neq = 0

作图

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