document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=72486>Question 72486</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Science and medicine. The combined resitance of two resistors R   and R<BR>\n" );
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document.write( "in a parallel ciruit is given by the formula.\r<BR>\n" );
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document.write( "R   =  1/(1/R ) + (1/ R )<BR>\n" );
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document.write( "I am having a hard time with this problem and need some help. Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #51914 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=51914\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> :<BR>\n" );
document.write( "I think you mean the resistors in parallel formula which is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%28%281%2FR1%29%2B%281%2FR2%29%29 ALIGN=MIDDLE  ALT=\"1%2F%28%281%2FR1%29%2B%281%2FR2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "When there are only two resistors in parallel, it can be simplified:<BR>\n" );
document.write( "Put the denominator fraction over a common denominator:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%28%28R1+%2B+R2%29%2F%28R1%2AR2%29%29 ALIGN=MIDDLE  ALT=\"1%2F%28%28R1+%2B+R2%29%2F%28R1%2AR2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "When you divide by a fraction, you invert and multiply:<BR>\n" );
document.write( "1 * <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28R1%2AR2%29%2F%28R1%2BR2%29%29 ALIGN=MIDDLE  ALT=\"%28%28R1%2AR2%29%2F%28R1%2BR2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Or just: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28R1%2AR2%29%2F%28R1%2BR2%29%29 ALIGN=MIDDLE  ALT=\"%28%28R1%2AR2%29%2F%28R1%2BR2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The \"product over sum\" equation universally used for two resistors in parallel<BR>\n" );
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document.write( "For example if you had R1 = 30 ohms and R1 = 70 ohms<BR>\n" );
document.write( "Rt = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2830%2A70%29%2F%2830%2B70%29%29 ALIGN=MIDDLE  ALT=\"%28%2830%2A70%29%2F%2830%2B70%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Rt = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%282100%29%2F%28100%29%29 ALIGN=MIDDLE  ALT=\"%28%282100%29%2F%28100%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Rt = 21 ohms<BR>\n" );
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