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#1 2006-02-21 06:53:25
- rp_
- Member
- Registered: 2006-02-10
- Posts: 7
solve the equation
if i have the ellipse x²/16 +y²/9 = 1
If x = 1.8 how do i fin y
could you please show your steps
thanks.
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#2 2006-02-21 09:05:10
- irspow
- Member
- Registered: 2005-11-24
- Posts: 1,055
Re: solve the equation
Solve for y first;
1 = x²/16 + y²/9;
9(1 - x²/16) = y²;
y = √(9(1 - x²/16);
y = (3/4)√(16 - x²);
if x = 1.8;
y = .75(±√12.76);
y ≈ ±2.68
I am at an age where I have forgotten more than I remember, but I still pretend to know it all.
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