Original
Find the vertical asymptotes of
{{MATH_161}}
{{CMD_162}}
The domain of the numerator, {{MATH_163}}, is {{MATH_164}} and it is continuous on that entire interval.
The denominator, {{MATH_165}}, is continuous on {{MATH_166}}, and is zero only at {{MATH_167}}.
That makes the domain of {{MATH_168}} to be {{MATH_169}}, and {{MATH_170}} is continuous on this interval.
There is only one {{MATH_171}}-value where {{MATH_172}} could have a vertical asymptote: at {{MATH_173}}. It is not in the domain of {{MATH_174}}, but is
approachable from within the domain. Where the denominator is zero, {{MATH_175}} is NOT a possibility because {{MATH_176}} cannot
be approached from within {{MATH_177}} due to the gap in the number line between {{MATH_178}} and {{MATH_179}}.
Since we can only approach {{MATH_180}} from the right (while staying in the domain of {{MATH_181}}), we should examine the right-hand limit:
{{MATH_182}}
For the numerator we have {{MATH_183}}, while for the denominator we have {{MATH_184}}. This means
{{MATH_185}}.
There is a vertical asymptote at {{MATH_186}}. There are no others because {{MATH_187}} is continuous on its domain {{MATH_188}}.