Detailed step by step answer pls. I don't understand

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secondary 4 | A Maths
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secondary 4 A Maths Singapore

Detailed step by step answer pls. I don't understand

Date Posted: 4 years ago

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Eric Nicholas K

4 years ago

We need to find the values of x for which y = 16.

We then proceed to find an expression for dy/dx using the chain and quotient rules.

Slope = Gradient, so they are asking for the numerical value of it.

Will look at this tonight if there is no response by others.

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Here is the starting part. We need the values of x because our expression for dy/dx will contain x only and not y.

Wait for my next part.

Date Posted: 4 years ago

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Something like this. My answer is quite large, so I am not 100% confident of my workings. Having said that, these are the steps to take when differentiating such expressions.

Date Posted: 4 years ago

Comments 2 add a comment

Eric Nicholas K

4 years ago

Tara, let me know if you need me to explain further.

We can also differentiate the expression directly by bringing down the power 4 to the base, reducing the power from 4 to 3 and then differentiating the chain, but the chain in this case is the entire bracketed term in which you have to do quotient rule.

Tara

4 years ago

Thanks so much for the detailed explanation. I understand it now