document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978092>Question 978092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The one to one function f is defined on the domain x>0 by f(x) = (2x-1)/(x+2).<BR>\n" );
document.write( "A) State the range, A, of f.<BR>\n" );
document.write( "B) Obtain an expression for f^-1 (x) for x&#8712;A.\r<BR>\n" );
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document.write( "I'm sorry for the two part question, but I'm really confused as to what A is. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #599576 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=599576\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This \"A\" seems too much a mystery, and not common label for any typical set of numbers.  The best you can do is to find the range of f(x); find the inverse, f^(-1)(x), and determine the range for this inverse.\r<BR>\n" );
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document.write( "The critical x values are x at 1/2 and at -2.  f is undefined at x=-2, but domain is therefore all the rest of the real numbers.  The RANGE for f^(-1)  will be all real numbers such that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%3C%3E-2 ALIGN=MIDDLE  ALT=\"x%3C%3E-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "Use the interval testing for range of f, but here is the graph to help:\r<BR>\n" );
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document.write( "The first function, f(x):<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C%282x-1%29%2F%28x%2B2%29%29 ALIGN=MIDDLE  ALT=\"graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C%282x-1%29%2F%28x%2B2%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Notice both a horizontal and a vertical asymptotes. </SPAN>\n" );
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