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marsssBest ResponseYou've already chosen the best response.1
\[\frac{ \cos ^{5}x }{ 5 }+\frac{ \cos ^{7}x }{ 7 }+c\]
 one year ago

alfers101Best ResponseYou've already chosen the best response.0
how come? what case did you used? is it case 2?
 one year ago

marsssBest ResponseYou've already chosen the best response.1
bak reyiz, cos^2 x=1sin^2 x. biliyon mu bunu??
 one year ago

alfers101Best ResponseYou've already chosen the best response.0
what? im sorry i cant understant your language, could you speak in english please?
 one year ago

alfers101Best ResponseYou've already chosen the best response.0
can someone please help me? :(
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
I think it's not like what marsss did there... \[∫ sin^4 xcos^2xdx\]\[=∫ sin^4 x(1sin^2x)dx\]\[=∫ sin^4xsin^6xdx\]\[=∫ (sin^2x)^2dx∫(sin^2x)^3dx\]\[=\frac{1}{4}∫ (1cos2x)^2dx\frac{1}{8}∫(1cos2x)^3dx\]\[=\frac{1}{4}∫ (12cos2x+cos^22x)dx\frac{1}{8}∫(13cos2x+3cos^22xcos^32x)dx\] Reduce the power of cosine into 1 using doucle angle formula, except for cos^3(2x). Good luck :
 one year ago
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