document.write( "Question 152092: Hi,\r
\n" );
document.write( "\n" );
document.write( "How would I solve the following: Linear Equations and their Solutions\r
\n" );
document.write( "\n" );
document.write( "Find f(1) for f(x) = 4x3 - 3x2 - x + 2 \r
\n" );
document.write( "\n" );
document.write( "Thank you,\r
\n" );
document.write( "\n" );
document.write( "Sally \n" );
document.write( "
Algebra.Com's Answer #111795 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! The problem gives you a \"function of x\": \n" ); document.write( "f(x) = 4x3 - 3x2 - x + 2 \n" ); document.write( ". \n" ); document.write( "Now, to find f(1), it simply asks you to find the value of f(x) when x=1 \n" ); document.write( ". \n" ); document.write( "So, simply substitute in 1 wherever you see the x and solve: \n" ); document.write( "f(x) = 4x^3 - 3x^2 - x + 2 \n" ); document.write( "Substituting we get: \n" ); document.write( "f(1) = 4(1)^3 - 3(1)^2 - 1 + 2 \n" ); document.write( "f(1) = 4(1) - 3(1) - 1 + 2 \n" ); document.write( "f(1) = 4 - 3 - 1 + 2 \n" ); document.write( "f(1) = 6 - 4 \n" ); document.write( "f(1) = 2 (this is what they want) \n" ); document.write( " \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |