document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=71201>Question 71201</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I solve the following equation for \"f\"?\r<BR>\n" );
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document.write( "a=(2pirf)^2/r\r<BR>\n" );
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document.write( "This is how far I got:\r<BR>\n" );
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document.write( "a=4pi^2r^2f^2/r\r<BR>\n" );
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document.write( "a=4pi^2rf^2\r<BR>\n" );
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document.write( "a/4pi^2r=f^2\r<BR>\n" );
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document.write( "If this is correct so far, where do I go from here? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #50950 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=50950\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a=(2pirf)^2/r<BR>\n" );
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document.write( "This is how far I got:<BR>\n" );
document.write( "a=4pi^2r^2f^2/r<BR>\n" );
document.write( "a=4pi^2rf^2<BR>\n" );
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document.write( "At this point just divide both sides by 4*pi^2*f^2 which leaves you with<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2F%284%2Api%5E2%2Af%5E2%29 ALIGN=MIDDLE  ALT=\"a%2F%284%2Api%5E2%2Af%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = r<BR>\n" );
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document.write( "you could also write it:<BR>\n" );
document.write( "r = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2F%282pi%2Af%29%5E2 ALIGN=MIDDLE  ALT=\"a%2F%282pi%2Af%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Student pointed out to me that I should have solved for f not r:<BR>\n" );
document.write( "a = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%2Api%5E2%2Ar%2Af%5E2%29 ALIGN=MIDDLE  ALT=\"%284%2Api%5E2%2Ar%2Af%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Divide both sides by (4*pi^2*r) and you have:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2F%284%2Api%5E2%2Ar%29 ALIGN=MIDDLE  ALT=\"a%2F%284%2Api%5E2%2Ar%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = f^2<BR>\n" );
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document.write( "f = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28a%2F%284%2Api%5E2%2Ar%29%29 ALIGN=MIDDLE  ALT=\"sqrt%28a%2F%284%2Api%5E2%2Ar%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "You can also write it:<BR>\n" );
document.write( "f = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F%282pi%29%29+%2A+sqrt%28a%2Fr%29 ALIGN=MIDDLE  ALT=\"%281%2F%282pi%29%29+%2A+sqrt%28a%2Fr%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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