This is a really a calculator question but it involves calculus concepts. I'm having a problem using the MATH->9:fnInt( command on the TI-83 Plus graphing calculator. It's supposed to evaluate a definite integral with the syntax fnInt(function,lower bound,upper bound) but when I type in fnInt((1-x^2),0,1), it gives me a syntax error message and highlights the 0. I tried it with and without the brackets around the function. What am I doing wrong? Any help would be appreciated. 
By the way, I already know that I can graph the function and then go 2nd->TRACE->7:integral:f(x)dx but that's so much more button pushing.
By the way, I already know that I can graph the function and then go 2nd->TRACE->7:integral:f(x)dx but that's so much more button pushing.
