Find the area under the given curves and given lines:
y = x4, x = 1, x = 5 and x-axis

We can see from the figure that the area of the region bounded by the curve y = x4 and the lines x = 1, x = 5 is shown by shaded region that is Area ADCBA.
Area of ADCBA = 
⇒ 
⇒ ![]()
= 624.8 units.