Question about Casio FX-115ES Scientific Calculator

# Im not sure on how to caculate derivatives on the calculator, help would be appreciated

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• Casio Master

The syntax of the command is

where function is the expression you are differentiating
x is the value of variable x at which you are evaluating the derivative, and tol is the tolerance (the error) you are willing to tolerate in the result.

If you do not want to specify a tolerance just the last comma and tol.

To enter the command d/dx you use key sequence [SHIFT][Integral]
To enter the symbol x in the expression you press [ALPHA][ ) ]
To enter a comma you use [SHIFT] [ ) ]
To enter a power of 10 in the tolerance use [x10^X] key

Example : Calculate

The key sequence is as follows
[SHIFT] [Integral] 3 [ALPHA] [ ) ] [X^2] [-] 5 [ALPHA] [ ) ] +2 [SHIFT] [ ) ] 2 [SHIFT] [ ) ] 1 [x10^X] [(-)] 12 ) [=]

DO NOT confuse [SHIFT] [ ) ] which enters the comma and [ALPHA] [ ) ] which enters the variable X

Posted on Aug 28, 2010

• k24674 Aug 28, 2010

Sorry
"if you do not want to specify a tolerance just the last comma and tol." should read "if you do not want to specify a tolerance just omit the last comma and tol."

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Posted on Jan 02, 2017

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