document.write( "Question 1166344: Let f(x) = cos^2 x and g(x) = sin^2 x. Write h(x) = cos(2x) as a linear combination of {f, g} \n" ); document.write( "

Algebra.Com's Answer #790841 by solver91311(24713) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "Look up the double angle identity for cosine, then just do a straight substitution of f(x) and g(x).\r
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\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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\n" ); document.write( "\n" ); document.write( "I > Ų
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