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anonymous
 one year ago
HELP BECOMING FAN AND MEDALS PLZ
1.) Find the derivative of f(x) = 3/x at x = 4
a) 3/4
b) 3/16
c) 16/3
d) 4/3
2.) Find the limit of the function by using direct substitution.
lim x>0 (x^22)
a) 2
b) 2
c) doesnt exist
d)0
anonymous
 one year ago
HELP BECOMING FAN AND MEDALS PLZ 1.) Find the derivative of f(x) = 3/x at x = 4 a) 3/4 b) 3/16 c) 16/3 d) 4/3 2.) Find the limit of the function by using direct substitution. lim x>0 (x^22) a) 2 b) 2 c) doesnt exist d)0

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Miss.SweetiePie @ganeshie8

welshfella
 one year ago
Best ResponseYou've already chosen the best response.21. convert to negative power 3/x = 3x^1 now to find the derivative use if y = ax^n derivative = anx^(n1)

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1To make it more clear, \[\frac{ d }{ dx } x^{n} = nx^{n1}\] this is the power rule apply it, find the derivative using this then plug in x = 4.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2here a = 3 and n = 1

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1And for 2, do as it says :)

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.1\[\lim_{x \rightarrow 0} ~~ x^22\] implying x is going to 0, so that should be an obvious substitution.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0for 1 i got 3/16 is that right?? @welshfella and number 2 i got B 2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.21. derivative = 2 / x^2 when x = 4 deriavative = 3 / 16 yes correct

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2also b = (0)^2  2 = 2 yes
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