document.write( "Question 55443: Hi there. I submitted some problems last Friday, but havent heard anything. If someone has time and is willing to lend soem brain power, I would really appreciate the help.\r
\n" );
document.write( "\n" );
document.write( "1. Consider the function f(x)=2.0x^3 + 4.5x^2. What are the coordinate pairs of the relative maximum and the relative minimum of f(x) in the interval {xI-3
\n" );
document.write( "\n" );
document.write( "3. What is the greatest integer less than -10.5?\r
\n" );
document.write( "\n" );
document.write( "4. Given that f(x)=x^2+6 and g(x)=x-4, find the composite function f(g(x)).\r
\n" );
document.write( "\n" );
document.write( "Thank you for your time.
\n" );
document.write( "Angela
Algebra.Com's Answer #37633 by venugopalramana(3286)![]() ![]() You can put this solution on YOUR website! Hi there. I submitted some problems last Friday, but havent heard anything. If someone has time and is willing to lend soem brain power, I would really appreciate the help. \n" ); document.write( "1. Consider the function f(x)=2.0x^3 + 4.5x^2. What are the coordinate pairs of the relative maximum and the relative minimum of f(x) in the interval {xI-3 \n" ); document.write( "F(X)=X^2(2X+4.5).....THE ZEROS ARE X=0...AND 2X+4.5=0...OR..X=-4.5/2=-2.25 \n" ); document.write( "IN INCREASING ORDER THEY ARE -2.25 AND 0... \n" ); document.write( "HENCE F(X) IS + VE AND INCREASING FOR X>0 \n" ); document.write( "F(X)=0 AT X=0 \n" ); document.write( "F(X) IS -VE IN THE INTERVAL (-2.25,0) \n" ); document.write( "F(X)=0 AT X=-2.25 \n" ); document.write( "F(X) IS POSITIVE FOR X<-2.25 \n" ); document.write( "F'(X)= 6X^2+9X =0......3X(2X+3)=0......2 EXTREMA ARE AT X=0 AND X=-3/2 \n" ); document.write( "SEE GRAPH BELOW..F(X) HAS A LOCAL MAXIMUM FOR X IN (-2,0)... \n" ); document.write( "MAXIMUM POINT IS (-3/2 ,27/8) \n" ); document.write( "AND A LOCAL MINIMUM FOR X IN (-1,1)...MINIMUM POINT IS (0,0) \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2.In what interval or intervals is the function in problem #1 increasing or decreasing? Use set notation as in question # to indicate the answer. \n" ); document.write( "ALREADY INDICATED ABOVE\r \n" ); document.write( "\n" ); document.write( "3. What is the greatest integer less than -10.5? \n" ); document.write( "PUT ON NUMBER LINE \n" ); document.write( "-11........-10.5.........-10 \n" ); document.write( "HENCE -11 IS THE GREATEST INTEGER LESS THAN -10.5 \n" ); document.write( " \n" ); document.write( "4. Given that f(x)=x^2+6 and g(x)=x-4, find the composite function f(g(x)). \n" ); document.write( "PUT G(X) =Y =X-4 \n" ); document.write( "F(G(X)) = F(Y)= Y^2+6 = (X-4)^2+6=X^2+16-8X+6= X^2-8X+22\r \n" ); document.write( "\n" ); document.write( "Thank you for your time. \n" ); document.write( "Angela \n" ); document.write( " \n" ); document.write( " |