Question about Texas Instruments TI-84 Plus Calculator

Hii i have the model CASIO fx- 991 ES & in that

1. I need to perform the integration. say for example integration of log(X), For this if i don't want to specify the limits then how should i give the expression because without specifying the limits it is giving syntax error.

2. The second one is if i need to specify the limit as 0 to infinity or -infinity to infinity then how could it be possible in this model?

Please help me in this regard.

Looking forward for the positive reply.

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Hello,

This calculator can only perform NUMERICAL DEFINITE integrals. Which meansyou have to supply the numerical value of the lower limit and the numerical value of the upper limit. The result is a numerical value.

The calculator cannot perform symbolic calculus.

If the function is simple you find the integral in tables of integrals where you will see that INT(log(X)dx=x(log(x)+1). Some calculators that have a CAS (computer algebra system) can manipulate symbolic expression, but not theCasio FX-991ES.

You ask it the value of the integral of log(X) from X=1 to X=3 and it will give you 0.5627748004

Hope it helps

Posted on Sep 06, 2009

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Dx/(1-sin(x)+cos(x))

Posted on Mar 02, 2009

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Posted on Jan 02, 2017

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.

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.

Oct 16, 2013 | Casio FX350MS Scientific Calculator

The Casios FX-115 ES , FX-115 ES PLus, FX-991 ES, FX-991 ES Plus C can perfom numerical differentiation at a point, and numerical integration between two given limits.

Aug 12, 2013 | Casio FX991ES Scientific Calculator

Casio has a scientific calculator with Model FX-991 ES. It is sold in North America, and maybe in other continents. You can find it at Staples/ Bureau en Gros stores for around 29 CAD.

Sep 06, 2011 | Casio FX-115ES Scientific Calculator

Depending on the actual log function you are talking about, the inverse function (what you call the anti log) can be one of several things.

The inverse of the natural log (LN) is the exponential function** e^x**.

**If y= ln(x) then x=e^y **

On a calculator functions that are inverse of one another share the same physical key.**If one function is marked on a key, the inverse function is usually the SHIFTED (or 2nd) key **

The inverse of the common (decimal logarithm) is the power function with 10 as base.

Example:** if y= log(x) then x=10^y**

For an arbitrary base (must be positive)** if y= log_b(x) then x=b^y**.

Note: I do not think that the FX-300ms can perform log calculations in bases other than e (natural log) or 10 (common decimal log).

The inverse of the natural log (LN) is the exponential function

On a calculator functions that are inverse of one another share the same physical key.

The inverse of the common (decimal logarithm) is the power function with 10 as base.

Example:

For an arbitrary base (must be positive)

Note: I do not think that the FX-300ms can perform log calculations in bases other than e (natural log) or 10 (common decimal log).

Aug 13, 2011 | Casio FX-300MS Calculator

Yes. Pressing the DMS key (two keys above the 8 key) when a result is displayed toggles the result between decimal degrees and degrees-minutes-seconds.

For example, to convert 3.5 degrees, press 3 . 5 = and you'll see 3.5. Now press DMS and you'll see 3 degrees 30 minutes 0 seconds.

For example, to convert 3.5 degrees, press 3 . 5 = and you'll see 3.5. Now press DMS and you'll see 3 degrees 30 minutes 0 seconds.

Jul 31, 2011 | Casio FX-115ES Scientific Calculator

Press SHIFT [MATRIX], specify the matrix to be inverted, then x^-1.

Example #103 in the appendix shows the exact procedure for inverting the matrix entered in example #096. If you need the manual and the appendix, you can download them from

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

Example #103 in the appendix shows the exact procedure for inverting the matrix entered in example #096. If you need the manual and the appendix, you can download them from

http://support.casio.com/manualfile.php?rgn=1&cid=004001004

May 09, 2011 | Casio FX-115ES Scientific Calculator

its simple

press mode

3;stat

2;A+Bx

l x l y l

l 2 l 4.6 l

l 4 l 5.9 l

press; AC

press;5.9

press; shift

press;1

press;7 (reg)

press;5 (comma)

press;=

u will get ans

press mode

3;stat

2;A+Bx

l x l y l

l 2 l 4.6 l

l 4 l 5.9 l

press; AC

press;5.9

press; shift

press;1

press;7 (reg)

press;5 (comma)

press;=

u will get ans

Feb 08, 2011 | Casio FX-115ES Scientific Calculator

For common logs (logs in base 10) use the 10^x function : Press [SHIFT] [Log] to access it.

For natural logs, use the exponential function. Press [SHIFT][ln] to access it.

For natural logs, use the exponential function. Press [SHIFT][ln] to access it.

Dec 03, 2010 | Casio FX-115ES Scientific Calculator

Hello,

There are many different functions...

You can download the entire manual after answering a few questions at www.safemanuals.com

after using the dropdown menu for this make and model.

Good Luck!

There are many different functions...

You can download the entire manual after answering a few questions at www.safemanuals.com

after using the dropdown menu for this make and model.

Good Luck!

Oct 18, 2010 | Casio FX-115ES Scientific Calculator

Hello,

Sorry I clicked the post a clarification request too fast.

You cannot compute it directly. You have to use the formula

log_18(number) = ln(number)/ln(18).

Here log_18 is log in base 18, ln is the natural logarithm (naeperian or log in base e).

Alternatively, you can use

log_18(number) = log(number)/log(18)

where log is log in base 10.

If you use those types of calculations a lot, it might be a good idea to get a Casio FX-115ES, or a Casio FX-991 ES. They have other nice features like fraction calculations and radicals.

Hope it helps.

Sorry I clicked the post a clarification request too fast.

You cannot compute it directly. You have to use the formula

log_18(number) = ln(number)/ln(18).

Here log_18 is log in base 18, ln is the natural logarithm (naeperian or log in base e).

Alternatively, you can use

log_18(number) = log(number)/log(18)

where log is log in base 10.

If you use those types of calculations a lot, it might be a good idea to get a Casio FX-115ES, or a Casio FX-991 ES. They have other nice features like fraction calculations and radicals.

Hope it helps.

Oct 15, 2009 | Casio FX-300MS Calculator

Jul 08, 2017 | Texas Instruments TI-84 Plus Calculator

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