Multiplier for the whole integral

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Homework Statement



\pi[\int \right[ \frac{\sqrt{x^2+1}}{x^4+sin(x)^2}\left]\;dx

Homework Equations



As above

The Attempt at a Solution



Is there some sort of identity not sure even where to start this one?

Sorry that pi is obviously meant to be a multiplier for the whole integral if that isn't clear.

It's not actually outside per se.

You can easily put it before the dx in a relevant format relation to the equation.

It's just a constant outside the integral instead of inside so think of it as the +C if that helps.
 
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Where did you get this integral from? By observation, it looks like an integral without an elementary anti-derivative.
 


rock.freak667 said:
Where did you get this integral from? By observation, it looks like an integral without an elementary anti-derivative.

In an advanced textbook, I assume there is a solution but it might as you say be some sort of Taylor series type equation?

I admit it's not technically homework but I thought this would be the place to put it?
 


wolfram says "No!" :P
 


Given that you're adding a power of x to a trigonometric function of x in the denominator, I doubt it would be doable. You could of course do a series expansion around some point and integrate each term in the series individually, but I'm not sure if you'd be able to find a closed-form expression for all the series coefficients.
 


What was the entire statement of the problem? Was it an indefinite integral as you show or a definite integral?
 
Prove $$\int\limits_0^{\sqrt2/4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx = \frac{\pi^2}{8}.$$ Let $$I = \int\limits_0^{\sqrt 2 / 4}\frac{1}{\sqrt{x-x^2}}\arcsin\sqrt{\frac{(x-1)\left(x-1+x\sqrt{9-16x}\right)}{1-2x}} \, \mathrm dx. \tag{1}$$ The representation integral of ##\arcsin## is $$\arcsin u = \int\limits_{0}^{1} \frac{\mathrm dt}{\sqrt{1-t^2}}, \qquad 0 \leqslant u \leqslant 1.$$ Plugging identity above into ##(1)## with ##u...
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