Qualification > Math

C3 and C4 DOUBTS HERE!!!

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Arthur Bon Zavi:

--- Quote from: Ang3l on November 19, 2011, 01:27:12 pm ---For some reason, i cant work this out or more like simplify it O_O

Differentiate (product rule): x(1 + 3x^5)

--- End quote ---

15x5 + 3x5
=> 18x5

Alpha:
Angel, you must take care to differentiate what is in the bracket.

(1 + 3x^5)

Diff. but keep it in the bracket itself. Then, expand. It'll make your work easier.

Malak:

--- Quote from: Arthur Bon Zavi on November 19, 2011, 01:35:34 pm ---15x5 + 3x5
=> 18x5

--- End quote ---
Lol, I said product rule ::)

The answer is --> (1 + 3x)^4 (1 + 18x)

@Alpha: Yeah but I cant seem to understand how do we end up with (1 + 18x)  :-\

Alpha:

--- Quote from: Ang3l on November 19, 2011, 01:39:35 pm ---Lol, I said product rule ::)

The answer is --> (1 + 3x)^4 (1 + 18x)

@Alpha: Yeah but I cant seem to understand how do we end up with (1 + 18x)  :-\

--- End quote ---

x(1 + 3x^5)

x(15x^4) + ((1 + 3x^5)(1) = 18x^5 + 1.

Did you copy the question correctly?  :-\

Malak:
^ Yeah, the question is correct.

I got the answer now  ;D

Thanks for the help anyway

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