Homework Statement
Find the general solution for the DE: t2y''-2y=0
Homework Equations
These were given for other parts of the problem so I'm not sure if they're relevant.
y1(t)=t2, y2(t)=t-1, y(1)=-2, y'(1)=-7
The Attempt at a Solution
The t2 at the front was really stumping me and I'm not...
Homework Statement
An object 1.25 cm tall is placed 100 cm in front of a convex lens with a focal length of magnitude 50 cm. A concave lens with a focal length of magnitude 20 cm is placed 90 cm beyond the first lens. Where is the final image located?
Homework Equations
(1/s)+(1/s')=1/f
s=...
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