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Mathematics, 22.06.2019 04:00
At school 460 of the students walk to school the number of students who take public transit is 20% of the number of students who walk. how many students take public transit
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Mathematics, 22.06.2019 05:00
Atreasure chest sinks at a rate no less than 20 feet er second. the floor of the icean is at most at -4,200 feet. will the tresure chest reach the ocean floor in less than 3 minutes? explain.
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Mathematics, 22.06.2019 07:30
Ece 202: problem set 1 due: june 14, 2019 (friday) the first 3 questions of this homework assignment covers some fundamental mathematical concepts that will play a role in this course. the remaining questions are on basic signals and laplace transforms. 1. a review of complex numbers. (a) compute the magnitude and the phase of the complex numbers β4 +j, and write them in polar form (i.e., of the form rejΞΈ). also, plot the complex number in the complex plane. (b) simplify the complex number 1 4 β β 1 2 β j β 2 22 and write them in cartesian form. (c) consider the complex number s = z1z2 Β· Β· Β·zm p1p2 Β· Β· Β· pn , where each zi is a complex number with magnitude |zi | and phase β zi , and each pi is a complex number with magnitude |pi | and phase β pi . write the magnitude and phase of s in terms of the magnitudes and phases of z1, z2, . . , zm, p1, p2, . . , pn. 2. a review of differentiation. (a) find df dx for the following functions. i. f(x) = (1β4x) 2 β x . ii. f(x) = β 1 + tan x. (b) find dy dx for the equation e x sin y + cos2 x cos y β x 3 = 0.
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