20 Most Recent Casio FX350MS Scientific Calculator Questions & Answers

The Fx-991ES Plus can solve simultaneous linear systems or order 3.

What you want to do is solve the linear equation 2x=10 to find the value of the unknown x that makes the equality true. Solving an equation usually involves rearranging therms, factors and so on. However your calculator was not designed to handle the solution of equations, no matter how simple they are.Some Casio scientific calculators can solve some types of equations (polynomials of degree 2 or 3, simultaneous linear equations in up to 3 unknowns). These are the FX-115 ES (Plus) and FX-991 ES (Plus C). Other equivalent models are sold in the world under different names.

Use the square-root key (three keys up from the "8" key). For example, to calculate the square root of 2, press square-root 2 =

Sorry, but you cannot. This calculator has three modes only: the general COMPutational mode, the Standard Deviation Mode and the REgression mode.

To calculate the Cosine of an angle, you first make sure that the angle unit on your calculator is set to the correct one (degree, or radian). After that it is all simple. Enter the angle value (50 degrees) then press the [COS] key. If you get an error then press the COS key followed by the angle value then press =.Note if your calculator display Cos ( , with a left parenthesis, then you have to press COS first followed by the angle value and possibly the right parenthesis.Note. The theta here is of no relevance.

The fx-350MS does not have complex capabilities. You can do complex calculations the old-fashioned way, breaking each complex number into its real and imaginary components.

3x 2y=0

Press the MODE key a certain number of times until you reach the screen that says DEG RAD, GRA. Press the number that corresponds to DEG.

Cheer up, the calculator can display UP to 10 digits, no more. Internal memory keeps 12 digits. So clearly, this calculator is not fit to handle the precision you apparently are seeking. It may be time to look for a more capable calculator.

You can't. However, you can calculate the log base 2 of any number by calculating

log2(x) = log(x)/log(2) = ln(x)/ln(2)

That is, the log base 2 of any number is the log of that number divided by the log of 2.

The way to do it is this; Divide the number by 2, get the integer quotient for the next iteration. Get the remainder for the binary digit, repeat the steps until the quotient is equal to 0.

It is because it is not set up correctly. For you to fix it, just press on the lower right button for few seconds till it displays " cas10" then let go of the button

Here is the Service Manual, but in normal instances, you would just buy another one, or return it to Casio for service.

Casio DR-120LB Service Manual

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It is math error. See user manual page 331 Appendix 1 for help. Appendix 1. Error Message Table - Casio fx-9750GII User Manual [Page 331] ' ManualsLib Also on Casio website. Errors (casio.com)

If your Casio fx-991EX calculator is displaying [Dec], it means it's in Decimal mode. To switch back to normal calculations, press the MODE button and select the desired mode, such as COMP for computation or MATH for mathematical functions. I think this will solve your problem

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The NEWYES NY-991MS and CTIFREE fx-991ES PLUS calculators do not have a dedicated "FACT" button like the Casio FX-83GTX. However, you can still find prime numbers on these calculators.To find prime numbers:NEWYES NY-991MS:Press the "MODE" button.Choose "PRIME" from the list of options.Enter the desired number and press "=" to check if it's prime.CTIFREE fx-991ES PLUS:Press the "MODE" button.Select "TABLE" or "TABLESET."Input a starting point and an ending point, then observe the table for prime numbers.Although the techniques may vary from those used on the Casio FX-83GTX, they prove to be effective for prime number calculations on the designated calculators.

There is a reset button on the back of the Casio. If that does not work, you may find an alternative method in the manual. CASIO HR-100TM USER MANUAL Pdf Download ' ManualsLib