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2° TEST limiti e funzioni

Authored by sergio la malfa

Mathematics

11th - 12th Grade

Used 166+ times

2° TEST limiti e funzioni
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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 limx0e3x12x=?\lim_{x\rightarrow0}\frac{e^{3x}-1}{2x}=?  

3

2

3/2

1

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 limx5x2+3x10x225=?\lim_{x\rightarrow-5}\frac{x^2+3x-10}{x^2-25}=?  

1

2/5

7/10

0

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Qual è il dominio della funzione  f(x)=ln(x+3)f\left(x\right)=\sqrt{\ln\left(x+3\right)}  

 x0x\ge0  

 2x0-2\le x\le0  

 x2x\ge-2  

 x3x\ge-3  

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Osserva il grafico di f(x).  limxf(x)=?\lim_{x\rightarrow-\infty}f\left(x\right)=?  

0

1

++\infty

-\infty

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Quale tra le seguenti funzioni è una funzione pari ? (NB: y=f(x) si dice pari se f(-x)=f(x) per ogni x del dominio)

y=senx

y=x³

y=tgx

y=|x|

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 f(x)=(2x)(3+x)f\left(x\right)=\frac{\left(2-x\right)}{\left(3+x\right)}  Qual è la funzione inversa di f(x)?

 f1(x)=(2+x)(3+x)f^{-1}\left(x\right)=\frac{\left(2+x\right)}{\left(3+x\right)}  

 f1(x)=(13x)(1+x)f^{-1}\left(x\right)=\frac{\left(1-3x\right)}{\left(1+x\right)}  

 f1(x)=(12x)(1+x)f^{-1}\left(x\right)=\frac{\left(1-2x\right)}{\left(1+x\right)}  

 f1(x)=(13x)(1+2x)f^{-1}\left(x\right)=\frac{\left(1-3x\right)}{\left(1+2x\right)}  

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 limx03lnx=?\lim_{x\rightarrow0^-}3^{\ln x}=?  

0

 ++\infty  

 -\infty  

1

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