bantu ngerjainnya dong

jawab


y = (3x +4)²  sin 2x

nilai maksimum sin 2x = 1
sin 2x = sin 90
x= 45 = π/4

dengan π = 3,14
ymaks  = ( 3(π/4) + 4)² (1) = ( 3/4 (3, 14)+ 4)²  
ymaks =  (6,355)² =40,39

ymin  = (3π/4 + 4)² (-1)   = - {3(3,14)/4 + 4)}
y min = - {6,355)² = - 40,39