- #1
Peppino
- 39
- 0
I have found that the U-Subsitution procedure can basically be completed in one step as is here:
[tex]\int f(g[x]) dx = \frac{\int f(t) dt}{g'(x)} + C[/tex]
and then replacing t with g(x) once the integral of f(x) is found.
Example: Say we have:
[tex] \int e^{x + 3x^{2}} dx [/tex]
Using the other formula, we get
[tex] \frac{e^{x + 3x^{2}}}{6x + 1} + C[/tex]
which is actually the same equation as we would have gotten if we used U substitution
[tex]\int f(g[x]) dx = \frac{\int f(t) dt}{g'(x)} + C[/tex]
and then replacing t with g(x) once the integral of f(x) is found.
Example: Say we have:
[tex] \int e^{x + 3x^{2}} dx [/tex]
Using the other formula, we get
[tex] \frac{e^{x + 3x^{2}}}{6x + 1} + C[/tex]
which is actually the same equation as we would have gotten if we used U substitution