Okay so here's the background.
The instructions are:
Estimate the uncertainty in g using the uncertainty propagation for a general function. The specific formula you should obtain for delta g is:
#1 Δg= g (sqrt(Δl/l)^2 + (2 ΔT/T)^2)
The uncertainty equation is :
#2 ΔF=(sqrt (partial derivative of x)^2( Δx)^2 + (partial derivative of y)^2( Δy)^2)
So basically, make equation #2 look like #1, and solve for delta g.
So the question is, how do I simplify equation #2 to look like equation #1.
F=g , x=l, and y=T is those equations.
What did you get for the partial derivatives of g with respect to x and y?
The partial derivative of x (l in the equation of g) is 4pi^2/T^2
the partial derivative of y (T in the g equation) is -8pi^2•l/T^3