- #1
ls_boy
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I'm trying to understand this integral.
[itex]\int \frac {x^3 dx}{x^4 + 1}dx\\[/itex]
One possible answer is this formula.
[itex]\int \frac {dx}{x}dx = \ln |x|+ C\\[/itex]
I've seen a couple of other formulas where if [itex]x^2 + a^2[/itex] is a part of the integrand
than trigonometric functions become part of the end formula. There are too many
formulas to choose from.
[itex]\int \frac {x^3 dx}{x^4 + 1}dx\\[/itex]
One possible answer is this formula.
[itex]\int \frac {dx}{x}dx = \ln |x|+ C\\[/itex]
I've seen a couple of other formulas where if [itex]x^2 + a^2[/itex] is a part of the integrand
than trigonometric functions become part of the end formula. There are too many
formulas to choose from.
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