Tìm các giá trị của x sao cho sin5x+2cos^2x đạt giá trị lớn nhất/nhỏ nhất.

use (1,2) to. ✓ find Č y = x² + 3x + c = 2 = (1)² + 3(1) + C. Page 3. 4. For what value of k, if any, will y = k sin(5x) + 2 cos(4x) be a solution to the ... ... sin(5x) . (21.2). Thus, the general solution to our nonhomogeneous equation ... H⇒. 0 − 625[A · 4 · 3 · 2x + B · 3 · 2 · 1] = 300x + 50. H⇒. −15,000Ax ... 1. Page 2. Finally, a “trick” one: 3ex df dx. + exf(x) = x3 does have constant coefficients: divide the whole equation by ex. sin 2x = 2 sin x cos x cos 2x = 2cos2x - 1. M1. 2cos2x – 1(cos x) – 2 sinx cosx (sin x). 2cos3x – cos x – 2sin2x cos x. 2cos3x – cos x – 2cosx (1 – cos2x). Lecture 1: What Are The Basic Trig Identities iLectureOnline; Lecture 2: Cofunction Identities iLectureOnline; Lecture 3: Simplify The Trig Expression: 1 1. Solve sin 2θ − cosθ = 41​ for θ and write the values of θ in the interval 0 ≤ θ ≤ 2π. · 2. Find the number of solutions of tanx + secx = 2cosx in [0, 2π]. · 3. Giấy phép cung cấp dịch vụ mạng xã hội trực tuyến số 337/GP-BTTTT do Bộ Thông tin và Truyền thông cấp ngày 10/07/2017. Giấy phép kinh doanh: MST-0106478082 do ... each problem, find the derivative of the function at the given value. 1) y = -sec (x) at x = p. 2) y = -2cos (2x) at x = 0 ... cos (2x) - 1. 47) lim x®0 sin ... Then. Z x sin(x2) dx = Z. 1. 2 sin u du = 1. 2(-cos u) + C = -. 1. 2 cos(x2) + C. Now. Z 4. 2 x sin(x2) dx = -. 1. 2. 2cos2 2x (2cos 2x + 1) -1(2cos 2x + 1) = 0 (2cos2 2x – 1) (2 cos 2x + 1) = 0 ... 2cos x (2 sin 5x/2 cos x/2) = 0 4 cos x sin 5x/2 cos x/2 = 0. So, Cos x ...