document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=821571>Question 821571</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Piecewise confuse me.  Please help me understand this equation.\r<BR>\n" );
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document.write( "Evaluate the piecewise defined function at the indicated values.\r<BR>\n" );
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document.write( "f(x)= { x^2+2x  if x &#8804; -1<BR>\n" );
document.write( "      { x       if -1< x &#8804; 1<BR>\n" );
document.write( "      { 1       if x > 1\r<BR>\n" );
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document.write( "f(-4), f(-2/3), f(-1), f(0), f(25)\r<BR>\n" );
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document.write( "Please help.   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #494235 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=494235\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> ---<BR>\n" );
document.write( "just break it down into the different \"pieces\", that's what piece-wise means:<BR>\n" );
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document.write( "when x <= -1 use the first piece-wise function: f(x) = (x^2 + 2x)<BR>\n" );
document.write( "why? <BR>\n" );
document.write( "because the function definition tells you to use the first piece when x <= 1<BR>\n" );
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document.write( "so use (x^2 + 2x) to calculate f(-4) and f(-2/3) and f(-1) because those are all the values of x <= -1 that the problems wants solved.<BR>\n" );
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document.write( "for f(0) use the second piece-wise function: f(x) = (x)<BR>\n" );
document.write( "why? <BR>\n" );
document.write( "you guessed it, because x=0 and the function definition tells you to use the second piece when -1 < x <= 1<BR>\n" );
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document.write( "for f(25) use the third piece-wise function: f(x) = (1)<BR>\n" );
document.write( "why? <BR>\n" );
document.write( "because the function definition tells you to use the third piece when x > 1<BR>\n" );
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document.write( "you can do the math on a calculator<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
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document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
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document.write( "Solve systems of linear equations up to 6-equations 6-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
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