
Derivate-recapitulare
Presentation
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard

Ligia Ion
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4 Slides • 4 Questions
1
Derivate - recapitulare
2
Operații cu funcții derivabile
Considerând cadrul propice aplicării regulilor de derivare să ne reamintim:
(f+g)′=f′+g′
(f⋅g)′=f′⋅g+f⋅g′
(gf)′=g2f′⋅g−f⋅g′
(α⋅f)′=α⋅f′, unde α∈R
3
Multiple Choice
1.Calculati derivata functiei f(x)=ln x+ln 2x + ln 3, x>0
x1+2x1+31
x2
x1+2x1
2x3
4
Multiple Choice
Derivata functiei f(x)=ln x −2ln x −1, x>0, x=e2 este
−x(ln x−2)23
x(ln x−2)21
−x(lnx−2)21
−x(lnx −2)1
5
Atentie la neatentie!
Gaseste greseala!
f′(x)=(lnx−2)2(lnx−1)′⋅(lnx−2)−(lnx−1)⋅(lnx−2)′
=(lnx−2)2x1⋅(lnx−2)−x1⋅(lnx−1)=(lnx−2)2x1⋅(lnx−2−lnx−1)
=x⋅(lnx−2)2−3
6
Multiple Choice
3. Derivata functiei f(x)=ln x−2x−1, pentru x>2 este:
x−1x−2
−(x−1)(x−2)3
−(x−1)(x−2)1
x−2x−1
7
Atenție la neatenție!
Derivata functiei f(x)=ln x−2x−1, pentru x>2
f′(x)=x−2x−11=x−1x−2
8
Multiple Choice
Fie functia f(x)=ln(2x−2), pentru x>1. Atunci f′(1) este
21
∞
nu se poate calcula
0
Derivate - recapitulare
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