The curve C has parametric equations x=t^2 and y=sin2t
The point A is an intersection of C with the x-axis
Find in terms of pi the x coordinate of A
Confused with this one, I thought of setting y=0 but can't see anyway to go from there, any help would be great thanks
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C4 differentiation question watch
- Thread Starter
- 13-03-2011 14:50
- 13-03-2011 14:54
Yes, set y to zero.
What is 2t when sin2t=0?
Divide by 2 to get values for t, and then sub in to your x equation.
- 13-03-2011 14:56
You're correct, put y=0 and solve for t. Do they specify the range of t in the question?
Once you've got t, substitute into x=t^2.