- #1
mathmathmad
- 50
- 0
Homework Statement
find the upper envelope for the family of ballistic curves :
y = ax - [x^2(a^2+1)]/2
an upper envelope is a curve y=F(x) such that for each x fixed, F(x) is the maximum of g(a) = ax - [x^2(a^2+1)]/2 for a in R
Homework Equations
The Attempt at a Solution
diff g(a) wrt to a and equate to 0 and get a=1/x so F(x) is 1/x?? :(