Moodle in English: STACK: integer and float variables in algebraic input

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STACK: integer and float variables in algebraic input

by Miro Iliaš - Wednesday, December 9, 2020, 4:51 AM

Hello,

imagine that I have algebraic input in STACK question in the form ta:v/N, where v is variable and N is a number.

When N is integer number, let say 150, the answer m/150 is accepted. However, when N becomes float number, for example 150.1, the answer m/150.1 is not accepted. The proper answer is 0.00666222518321119253830779480346*m instead, and student has to calculate (1/150.1)

I would need real (float) numbers appearing in algebraic expressions in chemical calculus applications. Any help for that ?

Re: STACK: integer and float variables in algebraic input

by Leo Butler - Wednesday, December 9, 2020, 9:42 AM

I think there are likely two issues:

in the input: ans section, you need to set forbid float to no;
you need to set simp:false to preserve the form of your expression with a floating-point denominator.

Your question will look like:

simp:false;
N : 150.1;
ta : v/N;

-----

Another method would be to ask for the numerator and denominator separately. I would likely do that since there are fewer pitfalls.

Leo

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Re: STACK: integer and float variables in algebraic input

by kuphal nana - Friday, December 18, 2020, 12:27 PM

You can define a variable as a float and assign a value to it in a single declaration. For example: float age = 10.5; In this example, the variable named age would be defined as a float and assigned the value of 10.5 https://www.myccpay.review/

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