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anonymous
 one year ago
Find the derivative of f(x) = 5x + 9 at x = 2.
anonymous
 one year ago
Find the derivative of f(x) = 5x + 9 at x = 2.

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butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2To differentiate f(x) = 5x + 9 , the 9 is a constant. When you differentiate a constant, you get 0. So dw:1436539169374:dw

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0@nairz it is factor theorm right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.05x Also, what does the dash you put after the "(5x)" mean?

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0can we do like substituting x with 2?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3the dash mean the derivative of x use the rule for algebraic differentiation y = a x^n y' = an x^(n1)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3* dash means the derivative of f(x)

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0can i know whether i told is right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I don't knnow @Melodious

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0pls which grade maths is this?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3 you substitute 2 after you have found the derivative

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Melodious most likely 1112 grade

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0@welshfella that was what i was asking from the beginning

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2yeah @welshfella is correct :) the dash just means derivative of.

Melodious
 one year ago
Best ResponseYou've already chosen the best response.0@nairz i studied in ninth grade

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok. Well I don't know how to find n

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2if we differentiate 5x, we don't get 5x :) dw:1436539684365:dw

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.25x^0 = 5 times x^0 = 5 times 1 = 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0but if we take it's first derivative then it becomes only 5,then where to put the value of x?

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2i have no idea..:/

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3nowhere the values is 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then what is the meaning of value at x=2?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3f'(x) = 5 the graph will be a horizontal line so the values will be 5 whatever value x is

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3dw:1436539994984:dw

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2it can't be 10... f ' (x) = 5 so it's just 5

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3sorry that should be f'(x) on the vertical axis:

welshfella
 one year ago
Best ResponseYou've already chosen the best response.3dw:1436540140306:dw

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.2yaaa :) So because it is a horizontal line , at ANY value of x, f'(x) = 5 ^^
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