document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=17638>Question 17638</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i am in desperate need of some help...i do not understand how to do this it confuses me...<BR>\n" );
document.write( "it says \"using f(x)=2x+1 find..<BR>\n" );
document.write( "f(-1)=<BR>\n" );
document.write( "f(3.2)<BR>\n" );
document.write( "im not looking for the answers im lookin to learn how to solve these so that i can do it on my own...any help would be greatly appericiated..<BR>\n" );
document.write( "thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #8509 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=8509\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> im not looking for the answers im lookin to learn how to solve these so that i can do it on my own...<BR>\n" );
document.write( "GREAT THAT IS THE SPIRIT..YOU WILL DEFINITELY SUCCEED..LET ME EXPLAIN\r<BR>\n" );
document.write( "\n" );
document.write( "using f(x)=2x+1 find..<BR>\n" );
document.write( "f(-1)=<BR>\n" );
document.write( "f(3.2)=<BR>\n" );
document.write( "f(x) means a function of x.that is you can give any permissible values to x (permissible so that the given function has some meaning..you will know later about domain as it is called)and substitute that value of x in r.h.s. of the equation given for f(x) to get the value of the function at that value of x ..so f(a) means ,put a in place of x wherever it occurs on the rhs and simplify<BR>\n" );
document.write( " here f(x)=2x+1..we have to find f(-1)..that is put x=-1 on the r.h.s...so we get f(-1)=2(-1)+1=-2+1=-1..now you can be true to your word and continue with other example!!!! </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );