Question about Casio FX-7400G Plus Calculator

All calculators it's the same:

log x base y = log x / log y

log (x*y) = log x + log y

log (x/y) = log x - log y

the default base in all the calculators is 10 so instead of writing log 4 base 2 you simply need to write log 4 / log 2

Hope you understand :)

Posted on Jul 06, 2009

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Posted on Jan 02, 2017

Simplifications of logarithmic expressions are based on the properties of logarithms

log(1)=0

log(a/b)=log(a)-log(b)

log(a^n)=n*log(a)

log_b(x)=log(x)/log(b)=ln(x)/ln(b)

As to exponentials you have

e^(0)=1

e^(-a)=1/(e^a)

(e^a)*(e^b)=e^(a+b)

(e^a)^n=e^(na)

That is the gist of it.

But I do not think that your calculator is able to handle any scientific calculations.

log(1)=0

log(a/b)=log(a)-log(b)

log(a^n)=n*log(a)

log_b(x)=log(x)/log(b)=ln(x)/ln(b)

As to exponentials you have

e^(0)=1

e^(-a)=1/(e^a)

(e^a)*(e^b)=e^(a+b)

(e^a)^n=e^(na)

That is the gist of it.

But I do not think that your calculator is able to handle any scientific calculations.

Sep 26, 2013 | Casio Model Dl-250la Heavy Duty Black/red...

Put the calculator in Equation solving mode. Select F3:Solver. Enter your equation; use X as unknow (no need to use Theta, the name of the variable is irrelevant.) Besides if you use theta you will get a syntax error.

Jun 29, 2012 | Casio CFX 9850GB Plus Calculator

The exponential function and the natural logarithm (LN) are inverse of one another. They share the same physical key. To calculate the natural log [LN] press the key marked LN and enter the number. Close the parenthesis) and press [=]

To calculate the exponential, use the key combination [SHIFT][LN] followed by the number.

To calculate the exponential, use the key combination [SHIFT][LN] followed by the number.

Feb 25, 2011 | Casio FX-115ES Scientific Calculator

The angle between two vectors a and b is calculated as the inverse cosine of the inner product of a and b, divided by the product of the lengths of the two vectors:

For 2-dimensional resp. 3-dimensional vectors this boils down to:

For 2-dimensional resp. 3-dimensional vectors this boils down to:

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

The 30XIIS does not have the capability of solving equations. It can, however, calculate expressions using logarithms. Use the LOG key for common logarithms and the LN key for natural logarithms. In both cases, press the function key, enter the value or expression, and then ) to match the ( the function automatically enters.

The LOG and LN keys are the second and third keys from the top in the leftmost column of the keyboard.

The LOG and LN keys are the second and third keys from the top in the leftmost column of the keyboard.

Nov 13, 2010 | Office Equipment & Supplies

First of all check its warranty, if exists, concern the authorized dealer or representative. If not unscrew your calculator and clean keypad with a wet white cotton cloth by rubbing gently you will see black spots on the cloth. place the keypad at where it was placed previously. You will find it working as usual. INSHALLAH.

Oct 08, 2010 | Casio FX-9750GPlus Calculator

The logarithmic functions have inverse functions that happen to have specific names. Even if the log^-1 notation may found on textbooks you will not find it on claculators.

Natural Logarithms LN. The inverse function of the natural logarithm is the EXPONENTIAL noted e to the x or e^x. On calculators the two functions usually share the same physical key. For example, LN is accessed directly and e^x is accessed with

Natural Logarithms LN. The inverse function of the natural logarithm is the EXPONENTIAL noted e to the x or e^x. On calculators the two functions usually share the same physical key. For example, LN is accessed directly and e^x is accessed with

Jun 13, 2010 | Texas Instruments TI-83 Plus Calculator

Hello,

Th CFX-9850GB Plus is programmed to perform 10 types of regressions, namely

LinearReg: Linear y=ax+b

Med-Med also linear y=ax+b

QuadReg :Quadratic y= ax^2+bx+c

Cubic: y=ax^3+bx^2+cx+d

Quartic: y=ax^4+bx^3+cx^2+dx+e

LogReg, logarithmic: y=a+b*ln(x)

ExpReg, exponential y=a*e^(bx)

PowerReg, power: y= ax^b

SinReg, sinusoidal: y=a*sin(bx+c) +d

LogisticReg, logistic; y= c/(1+a*e^(-bx))

There may be more regression models appropriate for more advanced (specialized) statistics but the ones in the list are all the CFX-9850GB plus offers. However, since the calculator knows a programming language, you may want to implement a particular model.

Hope that helps.

Th CFX-9850GB Plus is programmed to perform 10 types of regressions, namely

LinearReg: Linear y=ax+b

Med-Med also linear y=ax+b

QuadReg :Quadratic y= ax^2+bx+c

Cubic: y=ax^3+bx^2+cx+d

Quartic: y=ax^4+bx^3+cx^2+dx+e

LogReg, logarithmic: y=a+b*ln(x)

ExpReg, exponential y=a*e^(bx)

PowerReg, power: y= ax^b

SinReg, sinusoidal: y=a*sin(bx+c) +d

LogisticReg, logistic; y= c/(1+a*e^(-bx))

There may be more regression models appropriate for more advanced (specialized) statistics but the ones in the list are all the CFX-9850GB plus offers. However, since the calculator knows a programming language, you may want to implement a particular model.

Hope that helps.

Oct 24, 2009 | Casio CFX 9850GB Plus Calculator

For logarithms one uses one of two keys

**[LOG] for logarithms in base 10**. It is in the same column as the F1 key, on 4th row**[LN] for natural logarithms.**It is in the same column as the F2 key, fourth row, to the right of the [LOG] key.

Jul 25, 2009 | Casio FX-7400G Plus Calculator

Clear the ram:

1. Press [MENU]2. Press [tan] (MEM)3. Select RESET4. [F1] (yes)

1. Press [MENU]2. Press [tan] (MEM)3. Select RESET4. [F1] (yes)

May 14, 2009 | Casio CFX-9850G Plus Calculator

Jun 10, 2013 | Casio FX-7400G Plus Calculator

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