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Homework Statement
Formulate an expression that gives the focal length of a corrective lens, to be used in conjunction with a fixed lens. You may assume that both lenses are on the same plane, i.e. that they are very close together. The corrective lens should allow an object at a specified distance from the lenses to produce an image at a specified distance from the lenses. You may assume that the corrective lens is “weaker” than the other lens, i.e. f0 < fc.
Homework Equations
Assuming they are both thin lenses:
Thin lens equation:
1/d_{o}+1/d_{i} = 1/f
(1/object distance + 1/image distance = 1/focal length)
The Attempt at a Solution
So I have to derive this equation myself and I'm really lost on where to start. I tried to draw out a good picture of the situation but am still confused. Do I want to start with the thin lens equation as my starting out point?
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