How To Add Polar Numbers On A Ti 89 Calculator

Some Quick Hints for TI 89 apply in Higher Algebra and Trigonometry

This guide is meant to provide a few pointers on using some of the more than tricky but common features of the TI 89 calculator in the Higher Algebra and Trigonometry courses. For a more detailed guide refer to the owners transmission.

Graphing Related Operations

Finding Intersection of two Curves: To find the intersection of two curves, click F5(Math) then 5(Intersection). Then click once on each curve. Then click to the left of the intersection for the lower bound and to the right for the upper bound.

Defining Piecewise Functions: To define a piecewise function, use the when command which you volition need to type in using the alpha keys. for example

when(x<0,10-three,cos(x))

graphs

Polar and Parametric Equations: To graph polar or parametric equations, click Mode then alter the graph to Polar or to Parametric.

Finding Roots: To find a root on a graph, click F5(Math) then 2(Zero) so move the cursor to the left of the root. Hit enter, then motility to the right of the root and hit enter.

Shading Inequalities: To shade higher up or below a graph, click F5(Math) then C(Shade) and follow the instructions.

Operations

!: You tin find the ! key past clicking MATH and so 7(Probability) then !

Approximate Answers: To get a decimal approximation of a number striking the green diamond cardinal

Combinations: Click MATH then seven(Probability) and then 2(nCr). For example nCr(v,2).

Circuitous Numbers: To enter a complex number, employ the i key. For case (2 + 3i)*(1 - i) will multiply the complex numbers.

Degrees/Minutes/Seconds: Use ' and " to indicate minutes and seconds. To change to degrees, minutes and seconds click MATH then angle then DMS. For example 45.371 DMS.

Infinity: Note that the TI89 can handle .

Matrices: To input a matrix use APPs then Data/Matrix Editor then New. Then change Data to Matrix. Put in the proper name such every bit "AA" in the variable field. So enter row and column dimensions. Then edit equally a spread sheet. Use F6(util) to delete a column or row. To manipulate matrices, get out the matrix application, and so go to MATH then Matrix. Notice that J(RowOpps) is available.

Permutations: Click MATH and so seven(Probability) then 2(nPr). For instance nPr(v,2).

Polar and Rectangular Coordinates: To modify from polar coordinates to rectangular coordinates or from rectangular coordinates to polar coordinates, click MATH then angle and then P Rx and P Ry (polar to rectangular).

Sequences: To explore sequences, click Fashion then change the graph property to SEQUENCE. Then in Y= put in the sequence. For example, y = northward^two - northward. So click on graph or table to see the sequence.

Series: To evaluate a series ckick on MATH then A(Calculus) then S(Sum). The syntax is S(f(10),ten,a,b). Note that space serial are allowed. Try S(1/x²,x,1,)

Split Screen: To view more than one screen hitting MODE then Split Screen, then choose Elevation-Bottom or LEFT-RIGHT. To make the other side active, use the push.