Y=x^4(a-2x^3)^2 найти производную​

1) 7 1/2 = (7*2+1)/2 = 15/2 = (15*9)/(2*9) = 135/18
4 2/3 = (4*3+2)/3 = 14/3 = (14*6)/(3*6) = 84/18
5 1/6 = (5*6+1)/6 = 31/6 = (31*3)/(6*3) = 93/18
3 4/9 = (3*9+4)/9 = 31/9 = (31*2)/(9*2) = 62/18

2) 9 1/2 = (9*2+1)/2 = 19/2 = (19*6)/(2*6) = 114/12
5 1/3 = (5*3+1)/3 = 16/3 = (16*4)/(3*4) = 64/12
6 3/4 = (6*4+1)/4 = 25/4 = (25*3)/(4*3) = 75/12
8 5/6 = (8*6+5)/6 = 53/6 = (53*2)/(6*2) = 106/12

3) 12 2/3 = (12*3+2)/3 = 38/3 = (38*15)/(3*15) = 570/45
7 3/5 = (7*5+3)/5 = 38/5 = (38*9)/(5*9) = 342/45
6 4/9 = (6*9+4)/9 = 58/9 = (58*5)/(9*5) = 290/45
4 2/15 = (4*15+2)/15 = 62/15 = (62*3)/(15*3) = 186/45

1) производная = 3х² + 16х³ + 6х^5 +6
2)производная = 1/2√х ·Cos x - √x·Sin x
3)производная = (9х²·(х + 2) - (3х³ + 3)×1)/(х + 2)² = (9х³ + 18 х - 3х^3 - 3)/(х + 2)²
4) у = 20 х^6 - 5x^5
a) производная = 120 x^5 - 25 x^4
б) вторая производная = 600x^4 - 100 x^3
5) f(x) = (4x^3 - 3x^2 +5)^3
производная = 3(4x^3 - 3x^2 +5)^2 ·(12x^2 - 6x)
6) уравнение касательной : у - у0 = к(х - х0)
а) х0 = 0
    у0 = 4
к - это производная =6х = 0
уравнение касательной:
у - 4=0
у = 4
б) х0 = 2
    у0 = 16
к -это производная = 6х = 24
уравнение касательной:
у - 16 = 24( х - 4)
у - 16 = 24х - 96
у = 24 х - 80