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Mathematics 7 Online
OpenStudy (anonymous):

Int of sin (x^2)/x

OpenStudy (freckles):

\[\int\limits_{}^{}\frac{\sin(x^2)}{x} dx\]?

OpenStudy (freckles):

can we write the integrand as a series then integrate ?

OpenStudy (amistre64):

u = 2x, du = dx, 1/2 u = x will substitution work?

OpenStudy (anonymous):

Yup that looks right.

OpenStudy (amistre64):

pfft, 2x ... x^2

OpenStudy (anonymous):

I tried substitution and it didn't work.

OpenStudy (amistre64):

u = x^2, du = 2x dx this might not be easily subbed

OpenStudy (amistre64):

is this more advanced integration, or are they trying to demonstrate that not every function has a ... easy solution for antidifferentation.

OpenStudy (anonymous):

Can't be done with simple substitution since the x is in the denominator. There is no simple solution to this integral. A series expansion would probably be easiest to approximate the solution.

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