Question about Sharp EL-531VB Calculator

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I HAVE AN EL-531WH.HOW DO I CALCULATE FRACTIONS WITH IT?

3 2/5 X 1/2

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Hello,
If you want to enter improper fractions you use the key [a b/c]
3 [ab/c] 2 [ab/c]5 [x] 1/2 [=] (no need to use the [2ndF] [d/c] to enter 1/2.
Hope it helps.

Posted on Sep 20, 2009

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This calculator does not have a program to which you give the equation, and which returns the solutions. Sorry. You have to use the formulas you learned.
Let the equation be ax^2 +bx+c=0
You compute the discriminant Call it disc.
disc= (b^2-4*a*c)
1. If discriminant is larger than zero you have two solutions. Let us call them x1 and x2.
Then x1=(-b+square root of disc)/(2*a)
and x2= (-b-square root of disc)/(2*a)

2. If disc=0 , square root of disc =0 and x1=x2=-b/(2*a)
3. If disc is negative, there are no real solutions.

To find the solutions you replace a, b, and c by their numerical values, to calculate disc, its square root, and calculate X1 and X2.

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1 Answer

I want to calculate permutation and combination.


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If you have them then you can calculate with fractions.

The way to use the [a b/c] key is as follows
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