Rewriting a $maxleft0,dotsright$ function in order to integrate the function more properlyFinding an inverse Laplace transform of an integral that involves the $maxleft0,dotsright$ functionIntegral $int_0^infty x^2,e^-x^2operatornameerf(x),log(x),dx$Closed form for $largeint_0^1fracln^3xsqrtx^2-x+1dx$Closed form of the integral $largeint_0^infty e^-xprod_n=1^inftyleft(1-e^-24!;n!;xright)dx$Undo a convolution involving an inverse Laplace transform and definite integralEvaluating the closed form for $int_0^inftyln^kleft(1+1over xright) cdotmathrm dxover (1+x)^n=F(k,n)$Find an integral involving the exponential function with iAn approximation of the real part of $int_0^pi/2xleft(-1+sin xright)^log x dx$Proving that a double integral convergesProving that a solution to a differential equation is monotonicFinding an inverse Laplace transform of an integral that involves the $maxleft0,dotsright$ function

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Rewriting a $maxleft0,dotsright$ function in order to integrate the function more properly


Finding an inverse Laplace transform of an integral that involves the $maxleft0,dotsright$ functionIntegral $int_0^infty x^2,e^-x^2operatornameerf(x),log(x),dx$Closed form for $largeint_0^1fracln^3xsqrtx^2-x+1dx$Closed form of the integral $largeint_0^infty e^-xprod_n=1^inftyleft(1-e^-24!;n!;xright)dx$Undo a convolution involving an inverse Laplace transform and definite integralEvaluating the closed form for $int_0^inftyln^kleft(1+1over xright) cdotmathrm dxover (1+x)^n=F(k,n)$Find an integral involving the exponential function with iAn approximation of the real part of $int_0^pi/2xleft(-1+sin xright)^log x dx$Proving that a double integral convergesProving that a solution to a differential equation is monotonicFinding an inverse Laplace transform of an integral that involves the $maxleft0,dotsright$ function













0












$begingroup$


Yesterday I asked a question about a certain integral. In the integral is the term:



$$maxlefttextncdotsinleft(2picdot xcdot t-fracpi2right)righttag1$$



I know that $x$, $textz$ and $textn$ are all real and positive numbers.



Next to that I know that the integral is between certain boundaries (where only the lower bound is important for the function that I stated in equation $(1)$). I know that:



$$frac14xle t<frac12xtag2$$




Question: is there a way to rewrite equation $(1)$ using the condition that is stated in equation $(2)$ so that I lose the $maxleft0,dotsright$ function? If that is possible I can use that to evalute the integral using Mathematica more easily.











share|cite|improve this question









$endgroup$











  • $begingroup$
    the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:56










  • $begingroup$
    @CalvinKhor Where does that relation come from? I've never seen that.
    $endgroup$
    – Jan
    Mar 20 at 18:58







  • 1




    $begingroup$
    well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:59















0












$begingroup$


Yesterday I asked a question about a certain integral. In the integral is the term:



$$maxlefttextncdotsinleft(2picdot xcdot t-fracpi2right)righttag1$$



I know that $x$, $textz$ and $textn$ are all real and positive numbers.



Next to that I know that the integral is between certain boundaries (where only the lower bound is important for the function that I stated in equation $(1)$). I know that:



$$frac14xle t<frac12xtag2$$




Question: is there a way to rewrite equation $(1)$ using the condition that is stated in equation $(2)$ so that I lose the $maxleft0,dotsright$ function? If that is possible I can use that to evalute the integral using Mathematica more easily.











share|cite|improve this question









$endgroup$











  • $begingroup$
    the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:56










  • $begingroup$
    @CalvinKhor Where does that relation come from? I've never seen that.
    $endgroup$
    – Jan
    Mar 20 at 18:58







  • 1




    $begingroup$
    well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:59













0












0








0





$begingroup$


Yesterday I asked a question about a certain integral. In the integral is the term:



$$maxlefttextncdotsinleft(2picdot xcdot t-fracpi2right)righttag1$$



I know that $x$, $textz$ and $textn$ are all real and positive numbers.



Next to that I know that the integral is between certain boundaries (where only the lower bound is important for the function that I stated in equation $(1)$). I know that:



$$frac14xle t<frac12xtag2$$




Question: is there a way to rewrite equation $(1)$ using the condition that is stated in equation $(2)$ so that I lose the $maxleft0,dotsright$ function? If that is possible I can use that to evalute the integral using Mathematica more easily.











share|cite|improve this question









$endgroup$




Yesterday I asked a question about a certain integral. In the integral is the term:



$$maxlefttextncdotsinleft(2picdot xcdot t-fracpi2right)righttag1$$



I know that $x$, $textz$ and $textn$ are all real and positive numbers.



Next to that I know that the integral is between certain boundaries (where only the lower bound is important for the function that I stated in equation $(1)$). I know that:



$$frac14xle t<frac12xtag2$$




Question: is there a way to rewrite equation $(1)$ using the condition that is stated in equation $(2)$ so that I lose the $maxleft0,dotsright$ function? If that is possible I can use that to evalute the integral using Mathematica more easily.








calculus functional-analysis definite-integrals absolute-value maxima-minima






share|cite|improve this question













share|cite|improve this question











share|cite|improve this question




share|cite|improve this question










asked Mar 20 at 18:31









JanJan

22k31440




22k31440











  • $begingroup$
    the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:56










  • $begingroup$
    @CalvinKhor Where does that relation come from? I've never seen that.
    $endgroup$
    – Jan
    Mar 20 at 18:58







  • 1




    $begingroup$
    well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:59
















  • $begingroup$
    the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:56










  • $begingroup$
    @CalvinKhor Where does that relation come from? I've never seen that.
    $endgroup$
    – Jan
    Mar 20 at 18:58







  • 1




    $begingroup$
    well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
    $endgroup$
    – Calvin Khor
    Mar 20 at 18:59















$begingroup$
the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
$endgroup$
– Calvin Khor
Mar 20 at 18:56




$begingroup$
the function $max(0,x)$ can be written $(|x|+x)/2$, does that help?
$endgroup$
– Calvin Khor
Mar 20 at 18:56












$begingroup$
@CalvinKhor Where does that relation come from? I've never seen that.
$endgroup$
– Jan
Mar 20 at 18:58





$begingroup$
@CalvinKhor Where does that relation come from? I've never seen that.
$endgroup$
– Jan
Mar 20 at 18:58





1




1




$begingroup$
well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
$endgroup$
– Calvin Khor
Mar 20 at 18:59




$begingroup$
well, when $xge 0$, then $|x|=x$, and when $x<0$, $|x|=-x$.
$endgroup$
– Calvin Khor
Mar 20 at 18:59










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