Tìm cực trị của hàm số f(x) = sin^3x + cos^3x.

Dec 16, 2024 ... Ex 7.6, 2 sin 3 sin 3 sin 3 = sin 3 sin 3 = cos 3 3 1 cos 3 3 = cos 3 3 + cos 3 3 = cos 3 3 + sin 3 3 . 3 + = A trigonometric identity for sin(3x) is . This identity comes from the following well-known trigonometric identities. \begin{equation} I = \int \frac{1}{\sin\left(3x\right)}\:dx \end{equation} Let u = 3x to yield: \begin{equation} I = \int \frac{1}{\sin\left(3x\right)}dx = \int ... Mar 8, 2005 ... sin(A) sin(B) = 1. 2 [cos(A − B) − cos(A + B)] cos(A) cos(B) = 1 ... (9 points) Evaluate the integral: ∫ e5x sin(3x)dx. Page 5. 8. (9 ... Ans: We use the sin 3x formula to determine the value of the sine function for an angle that is three times angle x in measurement. The formula is given by sin ... Dec 12, 2019 ... 3x²-3x+sin(3x) x+o 3 cos(2x)+3x-3ex. 3+3 cos (3x). -6 sin(2x) +3-3ex lim 6-9 sin (3x). X70. -12 cos(2x)-30x care. 6. 15. ". Nov 17, 2020 ... The formula for sin 3x is 4 sin x sin(60°-x)sin(60° + X). Upvote ·. 91. Profile photo ... Apr 20, 2017 ... We will write sin(3x) in terms of sin(x). This math tutorial is suitable for trigonometry, precalculus and calculus students. full playlist: ... Apr 22, 2022 ... By clicking “Sign up”, you agree to our terms of service and acknowledge you have read our privacy policy. Sign up with Google. OR. Email. Jul 24, 2016 ... Explanation: This limit is indeterminate since direct substitution yields 00 , which means that we can apply L'Hospital's rule, which simply ...