document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121160>Question 121160</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the fomula 1/f=1/a+1/i to find the image distance i for an object that is 2,000,000 mm from a 250mm telephoto lens. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #89052 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=89052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Ff=1%2Fa%2B1%2Fi ALIGN=MIDDLE  ALT=\"1%2Ff=1%2Fa%2B1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a+-+f%29%2Faf+=+1%2Fi ALIGN=MIDDLE  ALT=\"%28a+-+f%29%2Faf+=+1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i%28a+-+f%29+=+af ALIGN=MIDDLE  ALT=\"i%28a+-+f%29+=+af\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=+af%2F%28a+-+f%29 ALIGN=MIDDLE  ALT=\"i+=+af%2F%28a+-+f%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=+2000000+mm%2A250mm%2F%282000000+mm+-+250mm%29 ALIGN=MIDDLE  ALT=\"i+=+2000000+mm%2A250mm%2F%282000000+mm+-+250mm%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=++%28500000000+mm%5E2%29+%2F+%281999750+mm%29+ ALIGN=MIDDLE  ALT=\"i+=++%28500000000+mm%5E2%29+%2F+%281999750+mm%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=++%28500000000+mm%29+%2F+%281999750%29+ ALIGN=MIDDLE  ALT=\"i+=++%28500000000+mm%29+%2F+%281999750%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=++250.03mm+ ALIGN=MIDDLE  ALT=\"i+=++250.03mm+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=++250mm+ ALIGN=MIDDLE  ALT=\"i+=++250mm+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Or\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Ff=1%2Fa%2B1%2Fi ALIGN=MIDDLE  ALT=\"1%2Ff=1%2Fa%2B1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F250mm+=1%2F2000000+mm+%2B1%2Fi ALIGN=MIDDLE  ALT=\"1%2F250mm+=1%2F2000000+mm+%2B1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.004mm+=0.0000005mm+%2B1%2Fi ALIGN=MIDDLE  ALT=\"0.004mm+=0.0000005mm+%2B1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.0040005mm+=1%2Fi ALIGN=MIDDLE  ALT=\"0.0040005mm+=1%2Fi\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=1%2F0.0040005mm+ ALIGN=MIDDLE  ALT=\"i+=1%2F0.0040005mm+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=1%2F0.0040005mm+ ALIGN=MIDDLE  ALT=\"i+=1%2F0.0040005mm+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=i+=249.968mm ALIGN=MIDDLE  ALT=\"i+=249.968mm\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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