An exponential model has the form y = ae² + be2- and it goes through the points (In 2, 4360), (In 3, 109) , (In 4, 1635) Use the method of least squares to find the following. Find the value of a. Find the value of b.

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Q: A QR factorization of A is given. Use it to find a least squares solution of      Ax = b

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