Tham KY's answer to Chowder's Junior College 1 H1 Maths question.
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Date Posted:
7 years ago
Whr do u get -2sin? I cant get it :(
Pls helpnme :(
Differentiate cos you get negative sin.
Differentiate its angle of 2x, you get 2.
Therefore, the result of d/dx (cos 2x) = -2sin 2x.
Differentiate its angle of 2x, you get 2.
Therefore, the result of d/dx (cos 2x) = -2sin 2x.
I dont get it ? If we differentiate 2x we will get 2 only ? Why it become -2sin
Can u help me with Q c for my new question ?
I dont understand the angle part
You need to diff two times for cos (2x)... Let me write down...
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