Problem 4. let a, b, c, γ0, γ1 be real numbers with a 6= 0. use theorem 1 to prove that the initial value problem ( ax00 + bx0 + cx = sin(t) x(0) = γ0, x0 (0) = γ1. has a unique solution on (−[infinity],[infinity]).

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step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation:

the answer is d

step-by-step explanation: