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whats the integral of cos(x)/sin^9(x) from pi/2 to pi/6.
I'm getting 31.875.
I'm getting 31.875.
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Kids, you tried your best and you failed miserably. The lesson is, never try. -Homer -
cos x dx= d(sin x)
integral = -1/8(sin^-8(x)) evaluated from pi/2 to pi/6
=[1-2^8]/8 = -63/8 = -7.875
EDIT: Damnit. see belowLast edited by KrazyHorse; January 30, 2007, 19:42.12-17-10 Mohamed Bouazizi NEVER FORGET
Stadtluft Macht Frei
Killing it is the new killing it
Ultima Ratio Regum -
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-31.875 or -255/8.
That is what the TI89 says.APOSTOLNIK BEANIE BERET BICORNE BIRETTA BOATER BONNET BOWLER CAP CAPOTAIN CHADOR COIF CORONET CROWN DO-RAG FEDORA FEZ GALERO HAIRNET HAT HEADSCARF HELMET HENNIN HIJAB HOOD KABUTO KERCHIEF KOLPIK KUFI MITRE MORTARBOARD PERUKE PICKELHAUBE SKULLCAP SOMBRERO SHTREIMEL STAHLHELM STETSON TIARA TOQUE TOUPEE TRICORN TRILBY TURBAN VISOR WIG YARMULKE ZUCCHETTOComment
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Obey the TI-89
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"X is almost always 7 or 13" ... Peppermint PattyComment
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Mother****. Just realised 2^8 = 256, not 64
So answer is -255/8, not -63/812-17-10 Mohamed Bouazizi NEVER FORGET
Stadtluft Macht Frei
Killing it is the new killing it
Ultima Ratio RegumComment
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Damn, I tried 31.875,-31.875, and 7.875 and the quiz is saying none of them are right. Damn this math review sucks. I put it in the function calculator and it gave me 31.875 I'm being to think someone messed up entering the correct answer on webwork.Kids, you tried your best and you failed miserably. The lesson is, never try. -HomerComment
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It should definitely be -31.87512-17-10 Mohamed Bouazizi NEVER FORGET
Stadtluft Macht Frei
Killing it is the new killing it
Ultima Ratio RegumComment
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Are you sure it's from pi/2 to pi/6, and not the other way around?Comment
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Well, he said he tried the +ve 31.875.12-17-10 Mohamed Bouazizi NEVER FORGET
Stadtluft Macht Frei
Killing it is the new killing it
Ultima Ratio RegumComment
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pi/2 at the top of the integral, pi/6 at the bottomKids, you tried your best and you failed miserably. The lesson is, never try. -HomerComment
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Like I said.Comment
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