Given the graph of f (x) above, find the following limits.
To enter ∞ in your answer field,
• When you are in text entry mode (when your answer field has just one line), type the word infinity with a lower case i.
• When you are in equation editor entry mode (when your answer field has multiple lines with the equation symbol menu bar), choose the symbol ∞ to enter ∞.
You can switch entry modes by clicking on the button with the upper case Greek letter Σ next to the answer field.