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Suppose 

f = f(x) satisfies f(9) = f(9.01) = 3.Estimate the value of df/dx at x = 9.

 May 4, 2020

Best Answer 

 #1
avatar+30046 
+3

df/dx ≈ (f(9.01) - f(9))/(9.01 - 9)  = (3 - 3)/0.01  = 0

 May 4, 2020
 #1
avatar+30046 
+3
Best Answer

df/dx ≈ (f(9.01) - f(9))/(9.01 - 9)  = (3 - 3)/0.01  = 0

Alan May 4, 2020
 #2
avatar+115 
0

Can you explain how you got this answer? I'm super confused. We had done one in class that was easier because it was worded slightly different and I could just do y2-y1 over x2-x1. 

ex. f(2)=5 and f(2.005)=5.012. well you would just subtract 5.012-5 over 2.005-2 which gives you 2.4.

The problem I posted I was stuck staring at versus the one above. 

 May 4, 2020

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