I have a Casio fx-CG10 and have never been able to change a decimal to a fraction. The F->D works for fraction to decimal but not for decimal to fraction. I've also tried the a b/c button but that also doesn't work. Is there some setting that I can change to make this work?
Example problem= ∫(upper=1, lower=0) (x^1/2 -x^3)dx= 4.166666667