c-anne
19:38 Uhr, 17.02.2008
DK2ZA
21:38 Uhr, 18.02.2008
f(x) = 2/x
f ( x ) − f ( x 0 ) x − x 0 = 2 x − 2 x 0 x − x 0 = 2 ⋅ x 0 − 2 ⋅ x x ⋅ x 0 x − x 0 = 2 ⋅ ( x 0 − x ) x ⋅ x 0 ⋅ ( x − x 0 ) = − 2 x ⋅ x 0
f(x) = 2*x² + x
f ( x ) − f ( x 0 ) x − x 0 = 2 ⋅ x 2 + x − ( 2 ⋅ x 0 2 + x 0 ) x − x 0 = 2 ⋅ x 2 + x − 2 ⋅ x 0 2 − x 0 x − x 0 =
= 2 ⋅ ( x 2 − x 0 2 ) + ( x − x 0 ) x − x 0 = 2 ⋅ ( x − x 0 ) ⋅ ( x + x 0 ) + ( x − x 0 ) x − x 0 = ( x − x 0 ) ⋅ [ 2 ⋅ ( x + x 0 ) + 1 ] x − x 0 =
= 2 ⋅ ( x + x 0 ) + 1
GRUSS, DK2ZA
19:46 Uhr, 21.02.2008
21:54 Uhr, 21.02.2008
Diesmal die Lösung als Bild.
15:19 Uhr, 23.02.2008