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- I have a question about this type of question. Will cos(mpix) will always be 0? and how do we determine it will be 0 and when sin(mpix) part also will be 0? moreover, for the sin(mpix) when we do the integration, why the negative sign is canceled? I did not follow.Solve sin(3x)cos(5x)−cos(3x)sin(5x)=−0.25sin(3x)cos(5x)-cos(3x)sin(5x)=-0.25 for the smallest positive solution.x =Show that cos x = x has a solution in the interval [0, 1]. Hint: Show that f(x) = x - cosx has a zero in [0, 1].
- find dydx 15. y = (sec x + tan x)(sec x - tan x)16. y = x^2 cos x - 2x sin x - 2 cos x17. ƒ(x) = x^3 sin x cos x 18. g(x) = (2 - x) tan^2 xShow that cos x = x has a solution in the interval [0, 1]. Hint: Show that f (x) = x − cos x has a zero in [0, 1].Suppose a 3rd order constant coefficient ODE has a characteristic equation that had 3 distinct roots, equal to -2, 1 and 4. What is the general solution for this ODE?