Definite integral finding unknown












-1












$begingroup$


Given ∫1^2 f(u) du =-5, ∫1^2 h(u) du =4, ∫2^5 f(u) du =8.



Find the value of p if ∫1^5 [f(u)-3pu] du=39



I just know few on how to solve this
39 = ∫1^5 f(u) du - ∫1^5 3pu du
39 = ∫1^2 f(u) du + ∫2^5 f(u) du - ∫1^5 pu du
39 = -5+8 -3∫1^5 pu du
36 = -3∫1^5 pu du



What to do next?










share|cite|improve this question











$endgroup$












  • $begingroup$
    Oh and the ∫5/1 [f(u)-3pu] du=39
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:15






  • 1




    $begingroup$
    Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
    $endgroup$
    – J.G.
    Dec 3 '18 at 18:17
















-1












$begingroup$


Given ∫1^2 f(u) du =-5, ∫1^2 h(u) du =4, ∫2^5 f(u) du =8.



Find the value of p if ∫1^5 [f(u)-3pu] du=39



I just know few on how to solve this
39 = ∫1^5 f(u) du - ∫1^5 3pu du
39 = ∫1^2 f(u) du + ∫2^5 f(u) du - ∫1^5 pu du
39 = -5+8 -3∫1^5 pu du
36 = -3∫1^5 pu du



What to do next?










share|cite|improve this question











$endgroup$












  • $begingroup$
    Oh and the ∫5/1 [f(u)-3pu] du=39
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:15






  • 1




    $begingroup$
    Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
    $endgroup$
    – J.G.
    Dec 3 '18 at 18:17














-1












-1








-1





$begingroup$


Given ∫1^2 f(u) du =-5, ∫1^2 h(u) du =4, ∫2^5 f(u) du =8.



Find the value of p if ∫1^5 [f(u)-3pu] du=39



I just know few on how to solve this
39 = ∫1^5 f(u) du - ∫1^5 3pu du
39 = ∫1^2 f(u) du + ∫2^5 f(u) du - ∫1^5 pu du
39 = -5+8 -3∫1^5 pu du
36 = -3∫1^5 pu du



What to do next?










share|cite|improve this question











$endgroup$




Given ∫1^2 f(u) du =-5, ∫1^2 h(u) du =4, ∫2^5 f(u) du =8.



Find the value of p if ∫1^5 [f(u)-3pu] du=39



I just know few on how to solve this
39 = ∫1^5 f(u) du - ∫1^5 3pu du
39 = ∫1^2 f(u) du + ∫2^5 f(u) du - ∫1^5 pu du
39 = -5+8 -3∫1^5 pu du
36 = -3∫1^5 pu du



What to do next?







definite-integrals






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Dec 3 '18 at 18:29







A Izalia

















asked Dec 3 '18 at 18:13









A IzaliaA Izalia

11




11












  • $begingroup$
    Oh and the ∫5/1 [f(u)-3pu] du=39
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:15






  • 1




    $begingroup$
    Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
    $endgroup$
    – J.G.
    Dec 3 '18 at 18:17


















  • $begingroup$
    Oh and the ∫5/1 [f(u)-3pu] du=39
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:15






  • 1




    $begingroup$
    Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
    $endgroup$
    – J.G.
    Dec 3 '18 at 18:17
















$begingroup$
Oh and the ∫5/1 [f(u)-3pu] du=39
$endgroup$
– A Izalia
Dec 3 '18 at 18:15




$begingroup$
Oh and the ∫5/1 [f(u)-3pu] du=39
$endgroup$
– A Izalia
Dec 3 '18 at 18:15




1




1




$begingroup$
Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
$endgroup$
– J.G.
Dec 3 '18 at 18:17




$begingroup$
Please use MathJax for clarity. For example, by ∫2/1 f(u) du, do you mean $int_1^2 f(u) du$? If so, write int_1^2 f(u) du.
$endgroup$
– J.G.
Dec 3 '18 at 18:17










1 Answer
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$begingroup$

Assuming I've understood your question:



Since $int_1^5 f(u) du=-5+8=3$, $3p=frac{3-39}{int_1^5 u du}=-frac{36}{12}=-3$, i.e. $p=-1$.






share|cite|improve this answer









$endgroup$













  • $begingroup$
    Thankyouuu so much
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:37











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1 Answer
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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes









0












$begingroup$

Assuming I've understood your question:



Since $int_1^5 f(u) du=-5+8=3$, $3p=frac{3-39}{int_1^5 u du}=-frac{36}{12}=-3$, i.e. $p=-1$.






share|cite|improve this answer









$endgroup$













  • $begingroup$
    Thankyouuu so much
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:37
















0












$begingroup$

Assuming I've understood your question:



Since $int_1^5 f(u) du=-5+8=3$, $3p=frac{3-39}{int_1^5 u du}=-frac{36}{12}=-3$, i.e. $p=-1$.






share|cite|improve this answer









$endgroup$













  • $begingroup$
    Thankyouuu so much
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:37














0












0








0





$begingroup$

Assuming I've understood your question:



Since $int_1^5 f(u) du=-5+8=3$, $3p=frac{3-39}{int_1^5 u du}=-frac{36}{12}=-3$, i.e. $p=-1$.






share|cite|improve this answer









$endgroup$



Assuming I've understood your question:



Since $int_1^5 f(u) du=-5+8=3$, $3p=frac{3-39}{int_1^5 u du}=-frac{36}{12}=-3$, i.e. $p=-1$.







share|cite|improve this answer












share|cite|improve this answer



share|cite|improve this answer










answered Dec 3 '18 at 18:19









J.G.J.G.

24.4k22539




24.4k22539












  • $begingroup$
    Thankyouuu so much
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:37


















  • $begingroup$
    Thankyouuu so much
    $endgroup$
    – A Izalia
    Dec 3 '18 at 18:37
















$begingroup$
Thankyouuu so much
$endgroup$
– A Izalia
Dec 3 '18 at 18:37




$begingroup$
Thankyouuu so much
$endgroup$
– A Izalia
Dec 3 '18 at 18:37


















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