MATH 155 Final: MATH155 Final 1101
31 Jan 2019
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Instructions: do not open this booklet until told to do so, fill out the box in the upper right corner of this page, this exam has 11 questions on 11 pages. Check to make sure that your exam is complete: no book, paper or device other than usual writing in- struments, this examination booklet, and a scienti c calculator are allowed. Failure to follow instructions may result in penal- ties. [10: evaluate z 8x2 + 4x 6. Page 5 of 11: suppose that at time t an object has temperature t (t). The object is brought into a room that is kept at a constant temperature ta. Newton"s law of cooling states that t satis es the di erential equation dt dt. = k(t ta) where k is a negative constant. [6] (a) suppose that at time t = 0 we bring an object whose temperature is.
