Mathematics
8 Online
OpenStudy (anonymous):
solve the initial value problem
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OpenStudy (anonymous):
\[\frac{ d }{ dc }=x \left( 6+x ^{2} \right)^{6}, y(0)=0\]
OpenStudy (anonymous):
is it really d/dc?
OpenStudy (anonymous):
uh dy/dx sorry
OpenStudy (anonymous):
you want to put all the y terms on one side and all the x terms on the other
OpenStudy (anonymous):
dy = x(6+x^2)^6 dx
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OpenStudy (anonymous):
what next?
OpenStudy (anonymous):
\[\int\limits_{}^{} dy = \int\limits_{}^{} x (6 + x^{2})^{6}dx\]
OpenStudy (anonymous):
i would integrate this by parts. letting u = x and dv = (6+x^2)^6 dx
OpenStudy (anonymous):
so this has to be integrated?
OpenStudy (anonymous):
yes. in order to find the solution y(x)
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OpenStudy (anonymous):
\[y=\frac{ 1 }{ 14 }(6+x ^{2})^{7}\]
OpenStudy (anonymous):
yes :).
+ C
C is obtained with [and is unique to] the initial condition given in the question y(0) = 0
OpenStudy (anonymous):
so is c 0 or does it have a value? -139968/7
OpenStudy (anonymous):
yes. and the solution would be the entire thing written out
OpenStudy (anonymous):
so its 0?
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OpenStudy (anonymous):
my bad. read too fast. it's not 0. its the second thing
OpenStudy (anonymous):
+139968/7
OpenStudy (anonymous):
are u sure i have one answer that is just the equation i put earlier and then another that is the same but with a minus (-139968/7)
OpenStudy (anonymous):
at the end
OpenStudy (anonymous):
it is - 139968/7
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OpenStudy (anonymous):
\[y=\frac{ 1 }{ 14 }(6+x ^{2})^{7}-\frac{ 139968 }{ 7}\]
OpenStudy (anonymous):
yes sir
OpenStudy (anonymous):
are you super sure??
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
ok thanks
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OpenStudy (anonymous):
glad i could help