Truc

Question 1

Sh x

Answer 1

ex - e-x /2

Question 2

Th x

Answer 2

ex - e-x / ex + e-x

Question 3

Ch^2 + sh^2 =

Answer 3

1

Question 4

Ch x =

Answer 4

1/2 X ex + e-x

Question 5

Solutions complexes de H2, eq caracteristique d’une EDL 2

D = discriminant

Answer 5

Si D pas 0 : h(x) = C1er1(x) + C2er2(x)

Si D = 0 : h(x) = (C1 + C2t) eRox

C1 C2 E complexes

Question 6

Solutions réelles de H2, eq caracteristique d’une EDL 2

D = discriminant

Answer 6

D > 0 : h(x) = C1er1x + C2 er2x

D=0 : h(x)= (C1+C2t)e Rox

D

Question 7

Lim qd n-> 8 de som1/k^2 =

Answer 7

Pi^2/6

Question 8

Chx + sh x =

Answer 8

ex

Question 9

Chx - shx =

Answer 9

e(-x)

Question 10

(chx)^2 - (shx)^2 =

Answer 10

1