A math function problem in senior high school is about to enter the college entrance examination. Thank you~
Let x = tante, then y (t) = m * Sint * 2+4 * 31/2 * Sint+n * cos 2, which is simplified by the double angle formula. y(t)=2*3^ 1/2sin2t+(n-m)/2*cos2t+(n+m)/2=( 12+((n-m)/2)^2)^ 1/2*sin(2t+a)+(n+m)/2, Y (t) max = (12+((n-m)/2) 2)1/2+(n+m)/2 = 7, y (t) min =-(12+((.