- #1
AAQIB IQBAL
- 11
- 0
For single variable functions derivative means slope of tangent what does it mean for functions of more than one variable.
book says that a function is said to be differentiable if:
f(x + Δx , y + Δy) - f(x , y) = AΔx + BΔy + ε'ψ(Δx , Δy) + εh(Δx , Δy)
WHERE ε, ε' → 0 AS Δx , Δy → 0.
PLEASE PROVIDE SOME ASSISTANCE ON IT.
THANX IN ADVANCE
book says that a function is said to be differentiable if:
f(x + Δx , y + Δy) - f(x , y) = AΔx + BΔy + ε'ψ(Δx , Δy) + εh(Δx , Δy)
WHERE ε, ε' → 0 AS Δx , Δy → 0.
PLEASE PROVIDE SOME ASSISTANCE ON IT.
THANX IN ADVANCE