Given the inequality: 3sin(4x)>2(−1)3 To solve this inequality, we must first solve the corresponding equation: 3sin(4x)=2(−1)3 Solve: Given the equation 3sin(4x)=2(−1)3 - this is the simplest trigonometric equation
Divide both parts of the equation by 1/3
The equation is transformed to sin(4x)=−233 As right part of the equation modulo =
True
but sin can no be more than 1 or less than -1 so the solution of the equation d'not exist. x1=4π+4asin(233) x2=−4asin(233) Exclude the complex solutions: This equation has no roots, this inequality is executed for any x value or has no solutions check it subtitute random point x, for example