26.5: A.5- Using the table

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Page ID: 54492

Thomas Tradler and Holly Carley
CUNY New York City College of Technology via New York City College of Technology at CUNY Academic Works

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The table ($\boxed{\text{2nd}}$$\boxed{\text{graph}}$) is useful as it gives a table representation of a function (from the $\boxed{y=}$ screen). Make sure there is a function typed in the Y1 postion and look at the table. If you want to know the value of the function for particular values of $x$ then we must use the ’TBLSET’ screen. Press $\boxed{\text{2nd}}$$\boxed{\text{window}}$. Move the cursor to the ’Indpnt’ line then to the right to highlight ask and press $\boxed{\text{enter}}$.

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Go back to the table $\boxed{\text{2nd}}$$\boxed{\text{graph}}$. Now your table is empty. Evaluate your function at $2.5$ by typing $2.5$ and pressing $\boxed{\text{enter}}$. You will see the value of the function in Y1 at $2.5$ in the table now. You can evaluate at any number of points.

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You can also evaluate at every half integer starting at $-1$ for example by going to the ’TBLSET’ screen ($\boxed{\text{2nd}}$$\boxed{\text{window}}$) changing ’TblStart’ to $\boxed{\text{(-)}}$$\boxed{\text{1}}$and $\Delta$Tbl$=.5$. Also change the ‘Indpnt’ setting to ‘Auto’ again.

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View the table ($\boxed{\text{2nd}}$$\boxed{\text{graph}}$) to see what happened.