document.write( "Question 173374: is f(x)*g(x) the same as f(g(x)) ? \n" ); document.write( "
Algebra.Com's Answer #128236 by Mathtut(3670)![]() ![]() ![]() You can put this solution on YOUR website! we need functions if f(x)=x+1 and g(x)=2x+5\r \n" ); document.write( "\n" ); document.write( "then f(x)*g(x)= (x+1)(2x+5)= \n" ); document.write( ": \n" ); document.write( "whereas f(g(x))=f(2x+5)=(2x+5)+1=2x+6..... \n" ); document.write( ": \n" ); document.write( "so in this case no they do not equal each other \n" ); document.write( ":if f(x)=x and g(x)=y \n" ); document.write( ": \n" ); document.write( "f(x)*g(x)=xy and f(g(x))=y.........so in general it appears that these statements are not the same. \n" ); document.write( " |