分母带根号如何求不定积分
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发布时间:2022-07-18 11:33
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热心网友
时间:2023-10-10 17:11
∫dx/√(x^2-2x+5)=∫dx/√[(x-1)^2+2^2)]=ln【(x-1)^2/2+√(x^2-2x+5)/2】+C
热心网友
时间:2023-10-10 17:11
∫
xdx/√(a²-x²)
=
∫
d(x²/2)/√(a²-x²)
=
(1/2)(-1)∫
d(-x²)/√(a²-x²)
=
(-1/2)∫
d(a²-x²)/√(a²-x²)
=
(-1/2)∫
(a²-x²)^(-1/2)
d(a²-x²)
=
(-1/2)
*
(a²-x²)^(-1/2+1)
/
(-1/2+1)
+
c
=
-√(a²-x²)
+
c