Multiplying Integrals with Different Bounds











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The question I have is two integrals mutliplied with different bounds




$$alpha_0(x)=int_x^1expleft(frac{-varphilambda^2}2right)dlambdacdotleft(int_0^1expleft(frac{-varphilambda^2}2right)dlambdaright)$$




What I would like to do is differentiate this with respect to $x$, but am not sure how to do so considering that I have the two integrals multiplied by eachother.



What is f '(alpha0(x))



I understand that the problem would be simple if they were added/subtracted.



I understand from the Fundamental Law of Calculus that the $x$ will replace the $lambda$ when I differentiate a single integral, just not sure how to approach with the double integral.



I know that an analytical solution is definitely possible.



Thank you.










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  • 1




    See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
    – rafa11111
    Nov 17 at 14:05






  • 1




    Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
    – Ethan Bolker
    Nov 17 at 16:27















up vote
0
down vote

favorite












The question I have is two integrals mutliplied with different bounds




$$alpha_0(x)=int_x^1expleft(frac{-varphilambda^2}2right)dlambdacdotleft(int_0^1expleft(frac{-varphilambda^2}2right)dlambdaright)$$




What I would like to do is differentiate this with respect to $x$, but am not sure how to do so considering that I have the two integrals multiplied by eachother.



What is f '(alpha0(x))



I understand that the problem would be simple if they were added/subtracted.



I understand from the Fundamental Law of Calculus that the $x$ will replace the $lambda$ when I differentiate a single integral, just not sure how to approach with the double integral.



I know that an analytical solution is definitely possible.



Thank you.










share|cite|improve this question




















  • 1




    See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
    – rafa11111
    Nov 17 at 14:05






  • 1




    Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
    – Ethan Bolker
    Nov 17 at 16:27













up vote
0
down vote

favorite









up vote
0
down vote

favorite











The question I have is two integrals mutliplied with different bounds




$$alpha_0(x)=int_x^1expleft(frac{-varphilambda^2}2right)dlambdacdotleft(int_0^1expleft(frac{-varphilambda^2}2right)dlambdaright)$$




What I would like to do is differentiate this with respect to $x$, but am not sure how to do so considering that I have the two integrals multiplied by eachother.



What is f '(alpha0(x))



I understand that the problem would be simple if they were added/subtracted.



I understand from the Fundamental Law of Calculus that the $x$ will replace the $lambda$ when I differentiate a single integral, just not sure how to approach with the double integral.



I know that an analytical solution is definitely possible.



Thank you.










share|cite|improve this question















The question I have is two integrals mutliplied with different bounds




$$alpha_0(x)=int_x^1expleft(frac{-varphilambda^2}2right)dlambdacdotleft(int_0^1expleft(frac{-varphilambda^2}2right)dlambdaright)$$




What I would like to do is differentiate this with respect to $x$, but am not sure how to do so considering that I have the two integrals multiplied by eachother.



What is f '(alpha0(x))



I understand that the problem would be simple if they were added/subtracted.



I understand from the Fundamental Law of Calculus that the $x$ will replace the $lambda$ when I differentiate a single integral, just not sure how to approach with the double integral.



I know that an analytical solution is definitely possible.



Thank you.







calculus integration differential-equations derivatives






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edited Nov 17 at 16:22

























asked Nov 17 at 14:00









Emma Houchell

61




61








  • 1




    See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
    – rafa11111
    Nov 17 at 14:05






  • 1




    Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
    – Ethan Bolker
    Nov 17 at 16:27














  • 1




    See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
    – rafa11111
    Nov 17 at 14:05






  • 1




    Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
    – Ethan Bolker
    Nov 17 at 16:27








1




1




See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
– rafa11111
Nov 17 at 14:05




See that the term in brackets is a constant, since the bounds of integration are constant. You need only to differentiate the leftmost integral.
– rafa11111
Nov 17 at 14:05




1




1




Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
– Ethan Bolker
Nov 17 at 16:27




Just one of the integrals depends on $x$. The other one is a constant. So proceed with the Fundamental Theorem of Calculus; be sure to account for the fact that the variable is the lower limit of integration. (I have just reprased @rafa11111 's comment, which you seem to have ignored.)
– Ethan Bolker
Nov 17 at 16:27















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