document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=930855>Question 930855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hi\r<BR>\n" );
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document.write( "I have been trying to transpose a formula for some time with very little success. is there any chance you could help with finding t in the following equation;\r<BR>\n" );
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document.write( "vc = v(1-e^(-t/CR))\r<BR>\n" );
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document.write( "Many thanks<BR>\n" );
document.write( "Jack </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #565323 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=565323\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> vc = v(1-e^(-t/CR)) <BR>\n" );
document.write( "vc = v -ve^(-t/CR)<BR>\n" );
document.write( "ve^(-t/CR) = v - vc<BR>\n" );
document.write( "e^(-t/CR) = (v - vc) / v<BR>\n" );
document.write( "e^(-t/CR) = 1-c<BR>\n" );
document.write( "use logarithm rule<BR>\n" );
document.write( "-t/CR = ln (1-c)<BR>\n" );
document.write( "t = -CR * ln(1-c)<BR>\n" );
document.write( " </SPAN>\n" );
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