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# OCR Gradient C1 Question Watch

1. I'm stuck on part 3 of the question, i) was 2 , ii) was 1.3

I don't understand how the mark scheme says that its between 2 to 2.3

Isn't it less steep ?
2. (Original post by Gelato)

I'm stuck on part 3 of the question, i) was 2 , ii) was 1.3

I don't understand how the mark scheme says that its between 2 to 2.3

Isn't it less steep ?
Draw a tangent to the curve at A.

Now join the points A and B with a straight line segment.

The segment has a higher gradient than the tangent.
3. (Original post by Gelato)

I'm stuck on part 3 of the question, i) was 2 , ii) was 1.3
i) the value of 2 is the gradient in A, at x=1
ii) 1.3 is not gradient but the value of x for B
It means that possible value of x for C is between 1 and 1.3
for example 1.1
So you can calculate a possible gradient for AC line

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Updated: December 5, 2010
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