document.write( "Question 1044520: 2cos(x-π/2)+3sin(x+π/2)-(3sinx+2cosx)= \n" ); document.write( "
Algebra.Com's Answer #659817 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "if the graph of f(x)=-3x^2+2x+k passes through the point (-1,3) , then the value of k is ?
\n" ); document.write( "f(x)=-3x^2+2x+k
\n" ); document.write( "Substitute x = -1 and y = 3
\n" ); document.write( "3 = -3(-1)^2 +2(-1) + k
\n" ); document.write( "Multiply out
\n" ); document.write( "3 = -3 -2 + k
\n" ); document.write( "Collect like terms
\n" ); document.write( "3 + 3 + 2 = k
\n" ); document.write( "k = 8.
\n" ); document.write( "So, f(x) = -3x^3 + 2x + 8
\n" ); document.write( "Hope this helps. :-) \n" ); document.write( "
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