document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1142371>Question 1142371</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this:\r<BR>\n" );
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document.write( "Suppose f, g and h are functions defined by\r<BR>\n" );
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document.write( "f(x) = 3x sqrt(3 + x), g(x) = x + 3 / 3x + 2 <BR>\n" );
document.write( "and h(x) = sqrt(x − 1) / sqrt(x + 1)\r<BR>\n" );
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document.write( "Which of the following statements is / are true?\r<BR>\n" );
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document.write( "A. Df = {x ∈ R : x ≥ −3}<BR>\n" );
document.write( "B. Dg = {x ∈ R : x != − 2/3}	<BR>\n" );
document.write( "C. Dh = {x ∈ R : x > −1}\r<BR>\n" );
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document.write( "1. Only A <BR>\n" );
document.write( "2. Only B <BR>\n" );
document.write( "3. Only C<BR>\n" );
document.write( "4. Only A and B <BR>\n" );
document.write( "5. A, B and C </SPAN>\n" );
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document.write( "A: The restriction on <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29+=+3x%2Asqrt%283%2Bx%29 ALIGN=MIDDLE  ALT=\"f%28x%29+=+3x%2Asqrt%283%2Bx%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is that 3+x has to be greater than or equal to zero.  Does A say that?<br><BR>\n" );
document.write( "B: The restriction on <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=g%28x%29+=+%28x%2B3%29%2F%283x%2B2%29 ALIGN=MIDDLE  ALT=\"g%28x%29+=+%28x%2B3%29%2F%283x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is that the denominator can't be 0.  Does B say that?<br><BR>\n" );
document.write( "C: The restriction on<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28x%29+=+sqrt%28x-1%29%2Fsqrt%28x%2B1%29 ALIGN=MIDDLE  ALT=\"h%28x%29+=+sqrt%28x-1%29%2Fsqrt%28x%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > is that x-1 must be greater than or equal to 0 and x+1 (since it is in the denominator) must be greater than 0.  Does C say that?<br><BR>\n" );
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