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Calculus
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Flávio Luiz Gonçalves de Souza
Entering derivative formulas into WolframAlpha Pro
Flávio Luiz Gonçalves de Souza, Estudante
Posted
9 years ago
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This post was translated into English - please in future use only English language. ~ Moderation Team.
Hello Guys, I subscribed to wolfram alpha pro, and I would need help with the following question: How do I enter the derivative for the problems below into wolframalphapro? Determine the derivative of the following functions at the indicated points
a) f (x) = 3x + 2, at point 1.5
b) f (x) = 1 - 4x ², at point 0.1
c) f (x) = 2x ² - x - 1, at point 2.5
Entering function is quiet [simple?], but for example if I type the function f (x) = 3x + 2, without the information of the point, I believe, the system returns unexpected results. Thanks to whoever can help me?
POSTED BY:
Flávio Luiz Gonçalves de Souza
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Moderation Team
Moderation Team, WOLFRAM
Posted
9 years ago
Marco - thank you very much for help with translation and the answer!
Flávio - in future please use only English language - this is a forum rule. Make use of automated translating services online if you do not know how to translate.
POSTED BY:
Moderation Team
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Flávio Luiz Gonçalves de Souza
Flávio Luiz Gonçalves de Souza, Estudante
Posted
9 years ago
Hello Marco Thiel, Thanks for your answers helped and solved the problem.
Olá Marco Thiel, Obrigado pela sua respostas ajudou e resolveu o problema.
POSTED BY:
Flávio Luiz Gonçalves de Souza
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Marco Thiel
Marco Thiel, University of Aberdeen - Dept. of Physics/Mathematics
Posted
9 years ago
With the help of google translate I got this
"Hello Guys, I subscribed to wolfram alpha pro, and I would need help with the following question:
How do I enter the derivative for the problems below into wolframalphapro?
Determine the derivative of the following functions at the indicated points
a) f (x) = 3x + 2, at point 1.5
b) f (x) = 1 - 4x ², at point 0.1
c) f (x) = 2x ² - x - 1, at point 2.5
Entering function is quiet [simple?], but for example if I type the function f (x) = 3x + 2, without the information of the point, I believe, the system returns unexpected results. Thanks to whoever can help me?"
I am not really sure whether you encounter problems without giving the point at which to evaluate the derivative or with the point. Here are the solutions for all examples:
http://www.wolframalpha.com/input/?i=+derivative+of+%283x%2B2%29+at+1.5
or
derivative of (3x+2) at 1.5
Here the same without the point:
http://www.wolframalpha.com/input/?i=+derivative+of+%283x%2B2%29+
d
erivative of (3x+2)
Here's the second example
http://www.wolframalpha.com/input/?i=+derivative+of+%281+-+4x%5E2%29+at+0.1+
and
http://www.wolframalpha.com/input/?i=+derivative+of+%281+-+4x%5E2%29+
For the last example we get:
http://www.wolframalpha.com/input/?i=+derivative+of+%282x+²+-+x+-+1%29+at+2.5+
or
http://www.wolframalpha.com/input/?i=+derivative+of+%282x+²+-+x+-+1%29
All of these give the expected results, and also allow you to display the stepwise solutions.
Cheers,
M.
POSTED BY:
Marco Thiel
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