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When it is time for you to put an expression in absolute value, press the OPTN key, then F5/Num, then F1/Abs. Open parenthesis, input expression, then close parenthesis.
For fractions, use the key with the symbol a b/c.
A little friendly advice, please do invest some of your time reading the manual. Most Casio graphing calculators work the same way. What you learn on one, works on another.
The quick way to determine absolute value is to square the value and take the square root of that.
So on the TI, with the value on-screen, just push these 2 keys in sequence (they are right next to each other):
Be careful what you say. There is no such thing as an absolute bar. There is a function called the absolute value. To represent it one uses two vertical bars (pipe symbols) '-13' =13, 'a-b'= a-b if a-b>0,
and
'a-b'=-(a-b) if a-b<0
To access the absolute value command, got to Run/Mat screen and press OPTN. Press F6> the F4:NUM, then F1:Abs In the Y= entry screen, press OPTN, then F5:Num, F1:Abs. enclose the argument of the function inside parentheses. Here are two screen captures to show how it is done.
To access the absolute value command, got to Run/Mat screen and press OPTN. Press F6> the F4:NUM, then F1:Abs In the Y= entry screen, press OPTN, then F5:Num, F1:Abs. enclose the argument of the function inside parentheses. Here are two screen captures to show how it is done.
Sorry, the calculator cannot solve such ualities (nothing to do with the absolute function). To find the solution set you need to study the two cases for the absolute value. Case 1 If x-1> 0, the absolute value is x-1. The inequality takes the form x-1<9. You can solve it as x<10
Case 2 If x-1<0, then the absolute value is 1-x. The inequality becomes 1-x<9. The solution for this inequality is x>-8
Combine the two domains to find the intersection -8<x<10
If you want to graph the absolute value of a function, feed the function to the absolute value ie graph y= abs(f(x)). The calculator will take care of it. See screen captures where I draw the function y1=x^3-5x^2-3 and y2='x^3-5x^2-3'. On the first graph the function is represented and on the second the function and its absolute value.
The calculator knows how to calculate the absolute value of an expression. The name of the command is abs(
Use the ab() function available in the MATH NUM menu. For example, to calculate the absolute value of -4, press MATH right-arrow 1 (-) 4 ENTER and see 4.
In mathematics, an absolute value is a function which measures the "size" of elements in a field or integral domain. More precisely, if D is an integral domain, then an absolute value is any mapping | ⋅ | from D to the real numbersR satisfying:
| x | ≥ 0,
| x | = 0 if and only if x = 0,
| xy | = | x || y |,
| x + y | ≤ | x | + | y |.
Note that some authors use the term valuation or norm instead of "absolute value".
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