20 Most Recent Casio fx-300ES Calculator Questions & Answers

To convert from a radical to its decimal representation, press the [S<>D] key.

Press [SHIFT[[ MODE] to enter (SetUp), then select [1:MathIO]

Are you trying to find a particular term in the geometric sequence? For example, in the geometric sequence 2,4,8,16 to find the 15th term we would use the formula a sub n = a sub 1 x r ^(n-1), where a sub n is the nth term of the geometric sequence a sub 1 is the 1st term of the geometric sequence r is common ratio between successive terms n is the term you are looking for In our example, a sub 1 is 2, r is 2 and n is 15. a sub n = a sub 1 x r ^(n-1) a sub 15 = 2x 2(15-1) a sub 15 = 2 ^ 15 a sub 15 = 32,768 On your calculator, you use the key to the right of x^2 to do x to the nth power. Good luck. Paul Geometric Sequences and Series casio fx 300es manual Google Search

Hey I had the Similar Problem, which got solved as I happened to refer to the Quick Reference specified inside the Calculator cover (FX-82 ES). Press the SHIFT and CLR buttons for a while and then select 2(Mode) and then press the ' = ' button. The ENG sign disappears!!! Well Hope it works for you and others too :)

To calculate the square root use the square root key, three rows above the "8" key.If you want to see the result symbolically, press SHIFT MODE 1 to select the MthIO mode. Bear in mind that the calculator can only show some results symbolically.

To configure the calculator to do fractions, set the Input/Output mode to MathIO.Press [SHIFT][MODE] to open (SetUp) then select [1:MathIO]. After you set it to MathIO, pressing the fraction key will display a fraction template where you can enter numerator and denominator as you would by hand (horizontal fraction bar). Also, the calculator will display results as fractions and radicals whenever possible.To perform arithmetic operations on fractions use the regular operation keys (x, +, -, /). The calculator will perform the operations and display the results as fractions (whenever possible).

The little L is the way to separate the numerator from the denominator. That is the old way of writing fractions. If you want the stacked representation, switch the display mode to MathIO. Press Shift Mode to get to Settings, then enter the number corresponding to MathIO.

Get another calculator.

Hi,
To get out of the default MthIO press [SHIFT][MODE][2:LineIO]
To get out of Sci display format, press [SHIFT][MODE][6:Fix] followed by a number between 0 and 9, that will set the number of decimal digits.

Hope it helps.
Thank you for rating this solution.

Hello,
The Casio FX-300ES does not handle symbolic algebra. So it cannot factor a general polynomial expression. The methods can be found in any book on Algebra.
However if you are interested in approximate factorization of quadratic and cubic polynomials, you can use the calculator to do that. It can solve aX^3 +bX^2+cX+d =0 and the quadratic equations.

If you want to factor a cubic polynomial P3(X) = aX^3+bX^2+cX+d , you write the corresponding cubic equation as aX^3+bX^2+cX=d =0 , then you divide all terms of the equation by a to obtain

X^3+(b/a)X^2+(c/a)X+(d/a)=0.

You use the calculator to solve (approximately) this equation.
Suppose you find the 3 roots X1,X2,and X3. Then the polynomial X^3+(b/a)X^2+(c/a)X+(d/a) can be cast in the factored form (X-X1)(X-X2)(X-X3) and the original polynomial P3(X) can be written as

P3(X) = a*(X-X1)(X-X2)(X-X3)

You can handle the quadratic polynomial the same way.

P2(X) =a*(X-X1)(X-X2) where X1, X2 are the two real roots

Hope it helps.

Set up mode
#4

I don't think you can change the pi value on your calculator. However, what you can do is store 3.14 in the memory and instead of using the pi key, recall the number from the memory key. How to use the various memory keys is outlined in the manual. Good luck, Paul http://support.casio.com/storage/en/manual/pdf/EN/004/fx-300ES_PLUS_EN.pdf

You could always remove the battery and start over. The procedure for removing the battery is on page 29 in the attached manual. Good luck, Paul http://support.casio.com/storage/en/manual/pdf/EN/004/fx-300ES_PLUS_EN.pdf

To insert pi on this calculator press [shift] [x10x] . (you can see the pi symbol above and to the side of this button).

Set the Input/Output display mode to LineIO. Press Mode then select 2: LineIO

Change from 5 decimal places to what?

That is not something that can be done by calculator. Do all the operations to get a result. Look at the number of significant figures in each number in the chain of operations. Keep the least number of significant figures. The result of a calculation cannot be more precise than the least precise of its components.

Use the quadratic formula, or factor the quadratic polynomial. Once factored into a product of two first degree binomials, the roots are obtained by setting (in TURN) each binomial factor equal to zero.

0.5x10^-6. Better use the exponents rules.