# calculus

posted by
**ali**
.

Find the area of the largest rectangle with one corner at the origin,

the opposite corner in the first quadrant on the graph of the line

f(x)=20-5x

, and sides parallel to the axes.

posted by
**ali**
.

Find the area of the largest rectangle with one corner at the origin,

the opposite corner in the first quadrant on the graph of the line

f(x)=20-5x

, and sides parallel to the axes.