precal
  • precal
Let F=f+g and G=3f-g find F'(1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Akshay_Budhkar
  • Akshay_Budhkar
Do u have f and g given?
precal
  • precal
I have a graph, would you like me to upload it?
Akshay_Budhkar
  • Akshay_Budhkar
yea sure i will have a look at it

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precal
  • precal
Ok, give me a minute I have to scan it.
anonymous
  • anonymous
Akshay had a good eyes :P
precal
  • precal
1 Attachment
precal
  • precal
Thanks for waiting. I think F ' = f ' + g ' G ' = 3f ' - g' not sure about G '
precal
  • precal
I am not sure what to do with F=f+g
anonymous
  • anonymous
This is the hard way: Use interpolation to find the value of f(x) and g(x) in polynomial form and then use the derivatives.
precal
  • precal
sorry not sure how to do that. Interpolation?
Akshay_Budhkar
  • Akshay_Budhkar
@Fool o_O??? What is the easy way? I would go for finding f and g as a general function ( it is a line) and add the general equations then differentiate and the substitute 1
precal
  • precal
ok let me write the equations
precal
  • precal
so, I only need the equation where x=1 so f(x)=-3x+10 now let me do g(x)
precal
  • precal
g(x) is x+1 F=f+g F=-3x+10+x+1 F=-2x+11 F'=-2 F'(1) = -2 correct?
precal
  • precal
yes, I am right. Lookedin the back of my book. Thanks for your help
Akshay_Budhkar
  • Akshay_Budhkar
hehe when u wrote ur function f i got it u will get your answer!! i was sure of it =D

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