HP 40gs HP 39gs_40gs_Mastering The Graphing Calculator_English_E_F2224-90010.p - Page 166
Accessing the MATH menu commands, of them
UPC - 882780045217
View all HP 40gs manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 166 highlights
Accessing the MATH menu commands The mechanics of accessing the MATH menu is very simple. We will illustrate the process using the Polynomial function POLYFORM, which is an extremely useful one. Change into the HOME view and then press the MATH key. When you do you will see the screen on the right. The menu always first appears with the Real functions highlighted. We could use the arrow keys to scroll down to the Polynomial functions but it is far faster to simply press the key labeled with the letter 'P' (on the '5' key). It is not necessary to press the ALPHA key first. You will notice in the screen on the right that there are two groups of functions beginning with a 'P' - being Polynomial and Probability. To reach Probability you would press the 'P' key again or . Once you are in the correct group, press the right arrow key to move into the list of functions belonging to that group. Once again you have a choice of using the arrow keys or the key corresponding to the first letter of the function. Pressing the right arrow key again will move down the functions a 'page' at a time. In this case, since every single function in the Polynomial group begins with a 'P', and there is only one 'page' of them, there is no difference between the methods. Move the highlight down to POLYFORM and then press the ENTER key. Your HOME view should now look like this. You will notice that the first bracket has already been inserted for you. Complete the expression... POLYFORM((X+2)^5-(3X-1)^2,X) (using the key to get ^) and then press the ENTER key. You will find that the expression (x + 2)5 − (3x −1)2 has been expanded on the following line to X^5+10*X^4+40*X^3+71*...etc There are two ways of seeing the complete result. You can move the highlight up to that line and it. You could then move back and forth through the line using the arrow keys to see it in full. A better method is to press the screen key labeled . This gives (after a pause) the result shown above. The portion off the edge of the screen can be seen by scrolling right using the arrow key. More details will be given of this POLYFORM function in the Polynomial group when we get to it. 166