3x3 + 3 x2 – x 0
(INEQ)(aX3 + bX2 + cX + d)
(aX3 + bX2 + cX + d 0)
3 3 1
CCC
Note: Solutions are displayed as shown here when Linear Display is selected.
Special Solution Display
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Math
Math
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•“All ” appears on the solution screen when the solution of an inequality is all numbers.
x2 ⩾⩾0 (INEQ)(aX2 + bX + c) (aX2 + bX + c ⩾ 0)
Math
1 0 0
•“NOT FOUND” appears on the solution screen when no solution exists for an inequality (such as X2 < 0).
Ratio Calculations (RATIO)
The RATIO Mode lets you determine the value of X in the ratio expression a : b = X : d (or a : b = c : X) when the values of a, b, c and d are known. The following shows the general procedure for using RATIO.
1.Press (RATIO) to enter the RATIO Mode.
2.On the menu that appears, select the (a:b=X:d) or (a:b=c:X).
3.On the Coefficient Editor screen that appears, input up to 10 digits for each of the required values (a, b, c, d).
•To solve 3 : 8 = X : 12 for X, for example, press in step 1, and then input the following for the coefficients (a = 3, b = 8, d = 12): 3 8 12 .
•To change a coefficient value you already have input, move the cursor to the appropriate cell, input the new value, and then press .
•Pressing will clear all of the coefficients to zero.