# A 2 cm tall object is placed 41 cm from a convex lens with a focal distance of 7 cm. The object is moved to 4cm from the same lens. How would you calculate the distance to the image from the lens, the magnification, and the height of the image?

Lens equation

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Use the lens formula: ( \frac{1}{f} = \frac{1}{u} + \frac{1}{v} )

- Calculate the image distance ((v)) using the lens formula.
- Calculate the magnification ((m)) using the magnification formula: (m = -\frac{v}{u})
- Calculate the image height ((h')) using the magnification: (h' = m \times h)

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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