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Derivate, ecuatia tangentei

Authored by Nicolae Popa

Other

11th Grade

Used 15+ times

Derivate, ecuatia tangentei
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10 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Fie  f:(0,)R, f(x)=3x2xlnx.f:\left(0,\infty\right)\rightarrow R,\ f\left(x\right)=3x^2-x\ln x.  Calculați  f(e)f'\left(e\right)  

 00  

 6e26e-2  

 6e6e  

 6e16e-1  

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Să se afle panta tangentei la graficul funcției  f:(0,)R, f(x)=ln2x+2x2xf:\left(0,\infty\right)\rightarrow R,\ f\left(x\right)=\ln^2x+2x^2-x  în punctul de abscisă  x=ex=e  

 4e1+2e4e-1+\frac{2}{e}  

 4e2e+24e^2-e+2  

 4e+12e4e+1-2e  

 1+4e1+4e  

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Să se afle derivata funcției   f(x)=ln(x+x25), x>5\ f\left(x\right)=\ln\left(x+\sqrt{x^2-5}\right),\ x>\sqrt{5}  

 xx25\frac{x}{\sqrt{x^2-5}}  

 1x25\frac{1}{\sqrt{x^2-5}}  

 1x+x25\frac{1}{x+\sqrt{x^2-5}}  

 xx+x25\frac{x}{x+\sqrt{x^2-5}}  

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Calculați derivata funcției  f(x)=tg2x1cos2x, cosx0f\left(x\right)=tg^2x-\frac{1}{\cos^2x},\ \cos x\ne0  

 cosx\cos x  

 11  

 00  

 2cos2x\frac{2}{\cos^2x}  

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 44  Calculați  f(1)f''\left(1\right)  pentru funcția  f(x)=x4x33x2+5x2f\left(x\right)=x^4-x^3-3x^2+5x-2  

 11  

 00  

 22  

 1-1  

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Fie  f:R{1}R, f(x)=2x1x1.f:R-\left\{1\right\}\rightarrow R,\ f\left(x\right)=\frac{2x-1}{x-1}.  Calculați  f(2)f'\left(2\right)  

 11  

 22  

 1-1  

 2-2  

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

 44  Calculați  f(1)f''\left(1\right)  pentru funcția  f(x)=x4 ln(x)f\left(x\right)=x^4\ \ln\left(x\right)  

 11  

 00  

 22  

 1-1  

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