4. (D² – 5D² – 9D + 45)y = 0 a.y = Ce2* + Cxe* + C,e5% b.y = Ce-3* + Cze + C,e5% c.y = Ce-3 + Cze* + C,e-5% d. none of the above

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A: According to guide and we should have been able to do only one question at a time #13

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A: As per our guidelines, I am only solving the first three. For other kindly upload the question…

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A: We will find out the required value.

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A: topic- linearization of a function

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A: It is given that, N = 40, α = 0.05 and df = 2. The obtained chi-square value is 13.31.