Find the length of the curve. 4) y= 8
3
​
(x 4/3
−2x 2/3
) from x=1 to x=27 You may use the formula: L=∫ a
b
​
1+[f ′
(x)] 2
​
dx=∫ a
b
​
1+[ dx
dy
​
] 2
​
dx. Solve the problem