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Question
evaluate limits
lim (sin(a+2x)-2sin(a+x)+sin a)/x^2
limx=0
Questioner: sunita
Category: Calculus
Private: No
Subject: please answer
Question: evaluate limits
lim (sin(a+2x)-2sin(a+x)+sin a)/x^2
limx=0
Hi, Sunita,
You have told me nothing about what you are studying. I have more than one way to do this, but I can't send one of them unless I know what you are studying -- exactly what level of calculus have you reached? What do you know about limits by now? Have you learned l'Hospital's rule?
Please tell me and I'll send a followup solution.
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Answers by Expert:
Paul Klarreich
Expertise
All topics in first-year calculus including infinite series, max-min and related rate problems. Also trigonometry and complex numbers, theory of equations, exponential and logarithmic functions. I can also try (but not guarantee) to answer questions on Analysis -- sequences, limits, continuity.
Experience
I taught all mathematics subjects from elementary algebra to differential equations at a two-year college in New York City for 25 years.
Education/Credentials
(See above.)
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