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If you are looking for some problems with solutions you can find some by clicking on the "Practice Problems" link above.
Section 2.4 : Limit Properties
- Given \(\mathop {\lim }\limits_{x \to 0} f\left( x \right) = 5\), \(\mathop {\lim }\limits_{x \to 0} g\left( x \right) = - 1\) and \(\mathop {\lim }\limits_{x \to 0} h\left( x \right) = - 3\) use the limit properties given in this section to compute each of the following limits. If it is not possible to compute any of the limits clearly explain why not.
- \(\mathop {\lim }\limits_{x \to 0} \left[ {11 + 7f\left( x \right)} \right]\)
- \(\mathop {\lim }\limits_{x \to 0} \left[ {6 - 4g\left( x \right) - 10h\left( x \right)} \right]\)
- \(\mathop {\lim }\limits_{x \to 0} \left[ {4g\left( x \right) - 12f\left( x \right) + 3h\left( x \right)} \right]\)
- \(\mathop {\lim }\limits_{x \to 0} \left[ {g\left( x \right)\left( {1 + 2f\left( x \right)} \right)} \right]\)
- Given \(\mathop {\lim }\limits_{x \to 12} f\left( x \right) = 2\), \(\mathop {\lim }\limits_{x \to 12} g\left( x \right) = 6\) and \(\mathop {\lim }\limits_{x \to 12} h\left( x \right) = 9\) use the limit properties given in this section to compute each of the following limits. If it is not possible to compute any of the limits clearly explain why not.
- \(\displaystyle \mathop {\lim }\limits_{x \to 12} \left[ {h\left( x \right)f\left( x \right) + \frac{{1 + g\left( x \right)}}{{g\left( x \right)}}} \right]\)
- \(\mathop {\lim }\limits_{x \to 12} \left[ {\left( {3 - f\left( x \right)} \right)\left( {1 + 2g\left( x \right)} \right)} \right]\)
- \(\displaystyle \mathop {\lim }\limits_{x \to 12} \frac{{f\left( x \right) + 1}}{{3g\left( x \right) - 2h\left( x \right)}}\)
- \(\displaystyle \mathop {\lim }\limits_{x \to 12} \frac{{f\left( x \right) - 2g\left( x \right)}}{{7 + h\left( x \right)f\left( x \right)}}\)
- Given \(\mathop {\lim }\limits_{x \to \, - 1} f\left( x \right) = 0\), \(\mathop {\lim }\limits_{x \to \, - 1} g\left( x \right) = 9\) and \(\mathop {\lim }\limits_{x \to \, - 1} h\left( x \right) = - 7\) use the limit properties given in this section to compute each of the following limits. If it is not possible to compute any of the limits clearly explain why not.
- \(\mathop {\lim }\limits_{x \to \, - 1} \left[ {{{\left( {g\left( x \right)} \right)}^2} - {{\left( {h\left( x \right)} \right)}^3}} \right]\)
- \(\mathop {\lim }\limits_{x \to \, - 1} \sqrt {3 + 6f\left( x \right) - h\left( x \right)} \)
- \(\mathop {\lim }\limits_{x \to \, - 1} \sqrt {f\left( x \right) - g\left( x \right)h\left( x \right)} \)
- \(\displaystyle \mathop {\lim }\limits_{x \to \, - 1} \sqrt[4]{{\frac{{2 + g\left( x \right)}}{{1 - 10h\left( x \right)}}}}\)
For each of the following limits use the limit properties given in this section to compute the limit. At each step clearly indicate the property being used. If it is not possible to compute any of the limits clearly explain why not.
- \(\mathop {\lim }\limits_{x \to 4} \left( {3{x^2} - 9x + 2} \right)\)
- \(\mathop {\lim }\limits_{w \to \, - 1} \left( {w - {{\left( {{w^2} + 3} \right)}^2}} \right)\)
- \(\mathop {\lim }\limits_{t \to 0} \left( {{t^4} - 4{t^2} + 12t - 8} \right)\)
- \(\displaystyle \mathop {\lim }\limits_{z \to 2} \frac{{10 + {z^2}}}{{3 - 4z}}\)
- \(\displaystyle \mathop {\lim }\limits_{x \to \,7} \frac{{8x}}{{{x^2} - 14x + 49}}\)
- \(\displaystyle \mathop {\lim }\limits_{y \to \, - 3} \frac{{{y^3} - 20y + 4}}{{{y^2} + 8y - 1}}\)
- \(\mathop {\lim }\limits_{w \to \, - 6} \sqrt[3]{{8 + 7w}}\)
- \(\mathop {\lim }\limits_{t \to 1} \left( {4{t^2} - \sqrt {8t + 1} } \right)\)
- \(\mathop {\lim }\limits_{x \to 8} \left( {\sqrt[4]{{3x - 8}} + \sqrt {9 + 2x} } \right)\)