Note: To change the value of one of the numbers in either of the functions, you must highlight with the mouse the number. To do this, you move the cursor over the first digit of the number, press down the left mouse button and move across the number. After releasing the left mouse button you can then type the new number of terms. It is important that you ONLY highlight the number before you begin typing.

If want to add a coefficent to x in cos(x), highlight x as above, release the left mouse button and then press the Backspace key before entering the coefficient.