I am having a little trouble solving a couple of integration by parts problems, mostly because I'm not sure which to use for u and which for dv, any help will be much appreciated.
Integral of (ln^2 x dx)
Integral of (xe^(2x)dx)
Integral of (ln^2 x dx)
Integral of (xe^(2x)dx)
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1.) ∫ln²(x) dx
u = ln²(x)
dv = dx
v = x
du = 2*ln(x)/x dx
uv - ∫v du
x*ln²(x) - ∫2*ln(x) dx
x*ln²(x) - 2x*ln(x) + 2*x + C
2.) ∫x*e^(2x) dx
Hint: let u = x and dv = e^(2x) dx
u = ln²(x)
dv = dx
v = x
du = 2*ln(x)/x dx
uv - ∫v du
x*ln²(x) - ∫2*ln(x) dx
x*ln²(x) - 2x*ln(x) + 2*x + C
2.) ∫x*e^(2x) dx
Hint: let u = x and dv = e^(2x) dx
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FOR SOLING IBP ALWAYS USE LIATE ORDER ie LOG.INVERSE TRIGO , ALGEBRAIC , TRIGONOMETRIC , EXPONENTIAL -USE u AS THAT FUNC WHICH COMES FIRST IN THE LIST N V AS THAT ONE WHICH COMES SECOND ! :D
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im guessing you mean ln(2x)
let f = ln(2x)
f' = 1/x
g'= 1
g = x
therefore
INT ln(2x)dx = xln(2x) - INT (1/x)(x)dx
I'm sure you know where to go from then
let f = ln(2x)
f' = 1/x
g'= 1
g = x
therefore
INT ln(2x)dx = xln(2x) - INT (1/x)(x)dx
I'm sure you know where to go from then
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Here is the Integral of (xe^(2x)dx)
(x)((1/2)e^(2x)) - ((1/4)e^(2x)) + C
(x)((1/2)e^(2x)) - ((1/4)e^(2x)) + C