Product Rule Test Question on TI89
Find y
y=(3x-2)(5x^3-x^2+1)
Raw Transcript
Hello this is Tom from every step
calculus dot com wanna show you how my programs work with the product rule
for Calc 1 and how easy it is,
how sure it is, and let’s get started
have to put index eight into the entry line here to get to my menu which you’re
instructed to do in my instructions
press ENTER here we’re already at the product rule
you see quadratic formula quotient rule all kinds of things you can choose from my
menu
you go up and down my menu whatever with the cursor
here we’re going to choose product rule product rule
any any two functions separated by a times sign
is the product rule for differentiation
and if it had a division sign in there you’d be doing the quotient rule
so you have to know some things about calculus and have to remember
certain things and that’s wonderful so keep that in mind is very important you
write all this down on your paper
you don’t write the formula, the word formula, the product rule you write
these
down on your paper to remind you as you would during a test or whatever
homework
what you’re doing and
then we’re going to enter our function you have to press alpha before you enter
anything into my entry lines here in my programs you
pressed alpha, we’re going to put the quote here you have to do an example of what it is,
it has to be in parentheses
with the times sign in between first parentheses we’re going to put the function in
of this test problem, this is an actual test problem from some person who didn’t get
do very well on the test he would have gotten certainly five points on this
problem if he did it correct
and points are essential being that
calculus testers score on partial credit and the class curve
so we put the left parenthesis
in there and we put 3 times
X minus
2, close off the parenthesis, put the times sign in there
put the left parenthesis in the next function g of x, which is
zero
times x
minus X
squared plus 1
close off the parentheses I always show you what you’ve entered
make sure you entered it correct, if you didn’t you can change it
I say it’s okay
f(x) 3x -2 g(x) is 5x cubed minus
x squared plus one write this on your paper and
you’re working out the formula just like this
exactly like that all this
on your paper exactly but the answer you can if you want
here’s exact answer pretty neat huh? every step
calculus dot com goto my site buy my programs certainly subscribe to my
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on calculus
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