Question about Texas Instruments TI-89 Calculator

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I don't know how to calculate an inverse of a module

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Hello,
Check the link below to a program that you can implement on your calculator.
http://www.cartesionline.it/materiali/algebra_numb_theory.cfm

Hope it helps.

Posted on Sep 13, 2009

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The tangent and inverse tangent offer the incorrect sollution. whould i simply get a new calculator?


No, you don't need a new calculator. Yours simply has the angular mode set to grads. The inverse tangent of 1 is 50 grads, the inverse tangent of sqrt(3) is 66.6... grads.
To change the angular mode, press MODE one or more times until you get the display "Deg Rad Gra". Select the mode you want (from the results you're expecting, it's 1 for Deg).

Jan 26, 2012 | Casio FX-300MS Calculator

1 Answer

How can i calculate log inverse with my fx-991ES plus


By 'log inverse', you presumably mean the inverse of the logarithm function. There are two logarithm functions on most scientific calculators. Firstly [ln], or natural logarithms, to the base e, where the inverse is e^x. Secondly [log], or logarithms to the base 10, where the inverse is 10^x.

Example 1 : ln(2) = 0.69314718 so e^0.69314718 = 2
Example 2: log(2) = 0.301029995 so 10^0.30102995 = 2

Oct 02, 2011 | Casio FX-115ES Scientific Calculator

2 Answers

I need to know which button is the inverse button on my Ti-36X Pro please!


The inverse of what&? Each inverse function uses the same key (shifted) as its direct function. For the reciprocal key look for x^-1 or [1/X]

Sep 15, 2011 | Texas Instruments TI-36 X Solar Calculator

1 Answer

How will you find cot inverse value in casio fx-350ms?


There is no Inverse Cotangent on the Calculator, but you have Inverse Tangent.

Cotangent is just the reciprocal of tangent.

nathane35_3.jpg


Just inverse the fraction and use inverse tangent to get its cotangent. Hope this helps.

Jun 17, 2011 | Casio FX-300MS Calculator

1 Answer

My calculator is giving me the wrong answers for the Log^-1. I keep on pressing SHIFT then the Log and the anti- log keeps on coming up as 10^. Before it would appear on the screen as Log^-1 ( ). Please...


Sorry the answer comes too late for your final exam. If you took the time to really understand what the inverse of a log function is, you would have saved yourself the anxiety before the test.

Anyway, the inverse of the logarithm in base 10 IS the power function with base 10.
y=log(x) <=> x=10^(y).

Some calculator manufacturers use the marking ^-1 to represent an inverse function. But recently one sees new calculators with the new notation.

By the way, the inverse of the natural log function (LN) is the exponential function (e^(x))

May 02, 2011 | Casio fx-300ES Calculator

1 Answer

When do I use the x-1 key and when do I use the inverse function keys? I know inverse function keys provide cosecant, secant and cotangent, but is that all they are used for?


Use x-1 to calculate 1/x (x to the negative-one power).

What I think you're calling the inverse function keys actually calculate arcsine, arccosine, and arctangent.

To calculate cosecant x, for example, use the relationship
csc(x) = 1/sin(x)

Sep 22, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

I need an inverse log button on the casio calculator 9750GII.... does it have one??? I know how to do log, but can't find the inverse.


The log base 10 function has an inverse: It is the 10 ^x function. It shares the same physical key with the decimal log. Use [SHIFT][LOG].
The natural log (LN) has an inverse alos and that it the exponentila function e^x. It shares the same physical key with it.


Jul 20, 2010 | Casio FX-9750GPlus Calculator

1 Answer

Ln inverse function


i want to get 250 tan 35 i dont know how?can u tell me plz

Apr 14, 2009 | Texas Instruments TI-30XA Calculator

1 Answer

Calculate inverse module


Hello,
The TI 89 cannot calculate the inverse modulo, but you can enter a program that can do that. I found a link to such program. Here it is.

http://www.cartesionline.it/materiali/algebra_numb_theory.cfm

Hope it helps.

Jan 14, 2009 | Texas Instruments TI-89 Calculator

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