Check table value

[Daniel_Grubbs]

You mean the parameters in evaluateAt() if I’m understanding correctly. You can use numericValue to directly calculate something as a parameter. You can also use variables you create, which is less messy. Just be careful with irrational and non-terminating variables. You’ll always want to round. Say I already had an equation in terms of x, eq1 and I want to evaluate for pi:
n = eq1.evaluateAt(numericValue("\pi"))
or

pi=numericValue("\pi")
n = eq1.evaluateAt(pi)

or a negative fraction:
n = eq1.evaluateAt(numericValue("-2/3"))
or

myFraction = numericValue("-2/3")
n = eq1.evaluateAt(myFraction)

See this other recent thread about comparing values.

Creating a range of values for self correcting problems

There’s a few ways: correct = this.numericValue >= 0.4 and this.numericValue <= 0.41 or within (in this example) 0.01 of 0.41: correct = numericValue("\abs(0.41-${this.numericValue})") <= 0.01 (Edit: I like the above because you can see the value intended as well as the tolerance desired. You could also have a variable instead of 0.41, so you could reuse the code and only have to change said variable. As opposed to the one below, because you may need to calculate the 0.41 somehow which would…