document.write( "Question 1189490: a) write log(x^3 √(x+1)/(x-2)^2, x>2 as a sum and difference logarithms.Express all powers as factors.\r
\n" ); document.write( "\n" ); document.write( "b) Find the exact value of the composite function cos[sin^-1(-1/3)]\r
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Algebra.Com's Answer #820866 by MathLover1(20850)\"\" \"About 
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a) write \"log%28x%5E3+%2Asqrt%28%28x%2B1%29%29%2F%28x-2%29%5E2%29\", \"x%3E2\" as a sum and difference logarithms.
\n" ); document.write( "Express all powers as factors.\r
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\n" ); document.write( "\n" ); document.write( " \"log%28x%5E3%2A+sqrt%28%28x%2B1%29%29%2F%28x-2%29%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "= \"log%28x%5E3%29%2Blog%28+sqrt%28%28x%2B1%29%29%2F%28x-2%29%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "= \"3log%28x%29%2Blog%28+sqrt%28x%2B1%29%29-log%28%28x-2%29%5E2%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "= \"3log%28x%29%2Blog%28%28x%2B1%29%5E%281%2F2%29%29-2log%28%28x-2%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "= \"3log%28x%29%2B%281%2F2%29log%28%28x%2B1%29%29-2log%28%28x-2%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "True for all \"x\".
\n" ); document.write( "Verify solution \"x%3E2\": The solution is \"x%3E2\"\r
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\n" ); document.write( "\n" ); document.write( "b) Find the exact value of the composite function \"cos%28sin%5E-1%28-1%2F3%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28sin%5E-1%28-1%2F3%29%29\"\r
\n" ); document.write( "\n" ); document.write( "let \"sin%5E-1%28-1%2F3%29=theta\" => \"sin%28theta%29=-1%2F3\"\r
\n" ); document.write( "\n" ); document.write( "This means that we are now looking for \"cos%28theta%29\".\r
\n" ); document.write( "\n" ); document.write( "Next, use the identity : \r
\n" ); document.write( "\n" ); document.write( "\"cos%5E2%28theta%29%2Bsin%5E2%28theta%29=1\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28theta%29=sqrt%281-sin%5E2%28theta%29%29\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28theta%29=sqrt%281-%28-1%2F3%29%5E2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28theta%29=sqrt%288%2F9%29\"\r
\n" ); document.write( "\n" ); document.write( "\"cos%28theta%29=%282sqrt%282%29%29%2F3\"\r
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