State the order of the given ordinary differential equation. (1 − x)y'' − 3xy' + 5y = cos x Determine whether the equation is linear or nonlinear by matching it with (6) in Section 1.1. an(x) dny dxn + an − 1(x) dn − 1y dxn − 1 + + a1(x) dy dx + a0(x)y = g(x) (6)

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step-by-step explanation:

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answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

answer: $1794

step-by-step explanation:

where is the option given