Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.
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You can actually start subbing in the value for x as soon as you have written down the expression for dy/dx correctly. There is no need to simplify dy/dx like I did because they did not ask for the general expression for dy/dx, but rather the value of dy/dx when x is a certain value. Also, there is no need to do the special angle like I did; just dump inside calculator will do.
Date Posted:
4 years ago
I just posted
You can send the next one first, but I may close session anytime.
Just post qns
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