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Math doubt
srestha
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Calculus
Jan 3, 2019
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Is it true
$\frac{1}{1+x^{2}}=1-x^{2}$
Is it applied every function? (like limit func, generating func)?
discrete-mathematics
srestha
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Calculus
Jan 3, 2019
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srestha
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shreyansh jain
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Jan 3, 2019
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I don't understand why are thinking like that, you may have got a few cases where it'd be working but in general,
$(1+x^2)^{-1}$ = $1 - x^2 + x^4 -x^6+...........$
and can't be approximated to just $1-x^2$
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srestha
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Jan 3, 2019
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yes thanks
and where it could be applied? I think limit func can never apply it
and generating function it will produce infinite series
So, can we conclude, it can never be applied?
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