2nd derivatives on TI 36 Pro

[lrdheat]

I was messing around with my TI 36X Pro and discovered that it is possible to take the 2nd derivative of a function, make tables of a second derivative, and solve a second derivative in the num-solve app. In table edit mode and algebraic entry mode, enter nDervi (your function, x,x). Go to num-solve and set it up as 0=nDerive( press table, hit choice 1 which will enter f(x into the numsolve equation, complete the parentheses, and make the right side |x=x. Press enter, enter a suitable guess, and you will find the value of x where an inflection point lies.