Hi to all great members(Happy)

has anyone know a trick to apply these rules in a ti-89?

I can't really get the right answer for this equation:(x^2+4x+4)^2

which cane be done by the chain rule.

all the best.

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- Mar 16th 2009, 05:02 AMUser Namehow to apply chain rule and product rule on Ti-89
Hi to all great members(Happy)

has anyone know a trick to apply these rules in a ti-89?

I can't really get the right answer for this equation:(x^2+4x+4)^2

which cane be done by the chain rule.

all the best. - Mar 16th 2009, 07:00 AMJameson
Because you are mentioning the chain rule, you must be referring to derivatives. The TI-89 can easily take the derivative of a problem like the one you posted. It's under Calc -> Derivative, or something like that. The syntax I believe is find the derivative function on the 89 under calc, input the expression you want to be differentiated, then put a comma and then x. That tells the calculator that x is the variable of differentiation. If you want to apply it at a certain point you can put another comma and the point I believe. Either way, add a closing parenthesis.

- Mar 16th 2009, 08:03 AMskeeter
- Mar 16th 2009, 01:33 PMUser Name
Thanks buddy, I know to find X we should add comma and than x on the end of the equation, is there anything else we can put there? like to find tangent can we like put x=2 to find normal and tangent?

Thanks a lot!!!

now i know what was my mistake! (Happy) - Mar 23rd 2009, 06:45 AMearboth