Thread: Help using a Casio fx-83ES to calculate a fraction as an exponent.

I am trying to teach myself algebra and I have downloaded a course book, but I arrived at the section for inputting algebra in to graphic calculators (I only own the Casio fx-83ES model) I have figured out some of the basics but I have arrived at :[e.g. 2x^2 + 3y^3 / (x+y)^1/2] could anyone please tell me how to (if at all possible) enter a fraction as the exponent (^1/2), I realise this is very basic but even the Casio user guide isn't very clear on this.

Originally Posted by whammybird

I am trying to teach myself algebra and I have downloaded a course book, but I arrived at the section for inputting algebra in to graphic calculators (I only own the Casio fx-83ES model) I have figured out some of the basics but I have arrived at :[e.g. 2x^2 + 3y^3 / (x+y)^1/2] could anyone please tell me how to (if at all possible) enter a fraction as the exponent (^1/2), I realise this is very basic but even the Casio user guide isn't very clear on this.

Press the power button then enter the fraction in brackets.

sorry for the terrible photo but this is what I am inputting in to the device, you can see the bracketed fraction shown as an exponent in the denominator. It is telling me there is a Math error when I try to get it to calculate. Thanks for the advice already and any in advance.

Just download its manual from internet or consult with those who does it.

I don't have the calculator, but note that is defined only if x + y ≥ 0.