Ask
your own question, for FREE!
Mathematics
44 Online
An equation of the line tangent to the graph of y=cos(2x) at x=π/4 is? Help please?
Still Need Help?
Join the QuestionCove community and study together with friends!
Do you have a graphing calculator?
yes i do
Hold on for a minute
okay
There is a formula for this
Still Need Help?
Join the QuestionCove community and study together with friends!
and i have no clue what it is?
Sorry, it's called Linear Approximation
y - f(c) = f'(c)(x - c)
y - f(pi/4) = f'(pi/4)(x - pi/4)
If you evaluate that, you'll get your answer
Still Need Help?
Join the QuestionCove community and study together with friends!
ohhh okay... i knew there was a formula but i didn't know which one... that helps me out a lot thanks so much!
Make sure if you're using a calculator that you're in radians, not degrees
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
ShinePrincess:
Write a function that will create the following transformation. Shift f(x) down 3
forgetmylife:
Only the real understand ud83eudd26ud83cudffdu2642ufe0f I'm tired. Tired of the constancy, the constancy of judgment.
rishavraj:
Just trying to find a friend. We met on openstudy, her nickname on there was something "tarantula".
Subshilava:
Which sentence follows correct grammatical conventions? ) u2022 The crow in that bush squawk loudly at the hawks.
6 minutes ago
0 Replies
0 Medals
10 hours ago
2 Replies
1 Medal
1 hour ago
4 Replies
0 Medals
1 day ago
4 Replies
3 Medals