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受欢迎的代数 >

(xln(x+3))/(x^2+1)=0

解答

\frac{x ln ( x + 3 )}{x ^{2} + 1} = 0

解答

x = 0, x = - 2

求解步骤

\frac{x ln ( x + 3 )}{x ^{2} + 1} = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

x = 0 or ln (x + 3) = 0

解

ln (x + 3) = 0 : x = - 2

验证解:

x = 0

真

, x = - 2

真

解为

x = 0, x = - 2

作图

流行的例子

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2log_{2}(x-3)=2

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