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anonymous
 4 years ago
Please help on this problem
Let f(x) = xx^3 to determine the approximate slope of the line tangent to the graph of f at (a, f (a)).
a = 0.2
slope= ?
&
a = 0.6
slope=?
thanks
anonymous
 4 years ago
Please help on this problem Let f(x) = xx^3 to determine the approximate slope of the line tangent to the graph of f at (a, f (a)). a = 0.2 slope= ? & a = 0.6 slope=? thanks

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.00.88 was wrong for some reason

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1oh ok well the derivative of f(x) is 13x^2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0can you show me step by step?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0a= 0.6 then the slope is ?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1yeah its called the power rule d/dx x^n = n*x^(n1) so for x x^1 > 1*x^0 = 1 for x^3 x^3 > 3*x^2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0could you do the same for question part b?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1are you sure its not 0.88 ??

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i'll plug it in again to be sure

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I plugged it in and its right for a=0.2

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1for part b) its the same derivative function, you are just evaluating the slope at x=0.6 > 13(.6)^2

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0ok hold on for sec let me work it out before you tell me the anwser lol

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I got 0.72 is that right?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1multiply before you add

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1i think you did 13 = 2 * .36 ?? multiply 3*.36 first

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0so the derivitive would be 13(x)^2 for this problem only?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1yes only for the function xx^3
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