The following complete 2nd-order model is proposed to estimate the sales price of a single family home on the size of the house (x-) and the neighbourhood is located in (x2): E(y) = Bo + B1x1 + B2x1 + B3x2 + B4x1x2 + B5x1²x2. What hypotlesis should be tested to determine if the quadratic terms are necessary to predict the sales price of 2 %3D a home?

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Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.