Différentielle Et Ln

Question 1

S= l* L

Diff

(g = m+h)
dg = d(m+h)

dg = dg/dm + dg/dh
dm + dh
Dm + Dh

Answer 1

dS = ldL + Ldl

DS = l abs dL + L abs dl

Question 2

Ln

Ln S = ln l + ln L

Answer 2

dS/S = dl/l + dL/L

dS = S * (dl/l + dL/L)

dS = l*L (dl/l + dL/L)

[raye] dS = Ldl + ldL

Question 3

Ecart relatif avec (valeur de ref)

Answer 3

(Gmes-Gth/Gmes) * 100

G=g

Question 4

Diff

I = U/R

Answer 4

dI = dI/dR + dI/dU

dI = (-U/R^2) [dR] + 1/R [dU]

dI = si U=R*I alors -I/R [dR] + dU/R

dI = I (-dR/R + dU/U) si R = U/I

DI = I abs (DR/ R abs) + DU/ U abs)

Question 5

Ln

I= U/R

Answer 5

lnI = lnU + lnR

dI/I = dU/U + dR/R

dI = I * (dU/U + dR/R)

DI = I abs (DU/ U abs + DR/ R abs)

les d en D et les sans d en abs

Question 6

Bcp de fioriture

Answer 6

g= m+ 50h
dg = d(m+50h)
dg = dm + 50dh
Dg = Dm + 50 Dh