document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139751>Question 1139751</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine whether the series converge or diverge using Leibnitz test<BR>\n" );
document.write( "the nth term as n tends to infinity = (-1)^n-1 / n^2<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=converges ALIGN=MIDDLE  ALT=\"converges\"   DISABLED_style= \"max-width:90%; height:auto;\" > by Leibniz’s test\r<BR>\n" );
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document.write( " Indeed, the sign pattern is + − + − + . . . and, as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=n+-%3E+infinity ALIGN=MIDDLE  ALT=\"n+-%3E+infinity\"   DISABLED_style= \"max-width:90%; height:auto;\" >, the term <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2Fn%5E2 ALIGN=MIDDLE  ALT=\"1%2Fn%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > monotonically decreases to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0 ALIGN=MIDDLE  ALT=\"0\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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