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derivate somma prodotto fratte

Total questions: 29

Worksheet time: 29mins

Name
Class
Date
1.

 f(x)=2senxcosx, df(x)=?f\left(x\right)=2senx\cdot\cos x,\ df\left(x\right)=?  

a)

 f(x)=2cosxsenxf'\left(x\right)=2\cos x\cdot senx  

b)

 f(x)=2(sen2x+cos2x)f'\left(x\right)=2\left(sen^2x+\cos^2x\right)  

c)

 f(x)=2(cos2xsen2x)f'\left(x\right)=2\left(\cos^2x-sen^2x\right)  

d)

 f(x)=2cos(cosx)senxf'\left(x\right)=2\cos\left(\cos x\right)senx  

2.

 f(x)=tgx=senxcosx, Df(x)=?f\left(x\right)=tgx=\frac{senx}{\cos x},\ Df\left(x\right)=?  

a)

 f(x)=1cos2xf'\left(x\right)=\frac{1}{\cos^2x}  

b)

 f(x)=senxcos2xf'\left(x\right)=\frac{senx}{\cos^2x}  

c)

 f(x)=cosxsenxsen2xf'\left(x\right)=\frac{\cos x-senx}{sen^2x}  

d)

 f(x)=senx+cosxcos2xf'\left(x\right)=\frac{senx+\cos x}{\cos^2x}  

3.

 f(x)=xx2+1, Df(x)=?f\left(x\right)=\frac{x}{x^2+1},\ Df\left(x\right)=?  

a)

 f(x)=(3x2+1)(x2+1)f'\left(x\right)=\frac{\left(3x^2+1\right)}{\left(x^2+1\right)}  

b)

 f(x)=(2x21)(x2+1)2f'\left(x\right)=\frac{\left(2x^2-1\right)}{\left(x^2+1\right)^2}  

c)

 f(x)=(1x2)(x2+1)2f'\left(x\right)=\frac{\left(1-x^2\right)}{\left(x^2+1\right)^2}  

d)

 f(x)=(x21)(x2+1)2f'\left(x\right)=\frac{\left(x^2-1\right)}{\left(x^2+1\right)^2}  

4.

 f(x)=xex, Df(x)=?f\left(x\right)=\frac{x}{e^x},\ Df\left(x\right)=?  

a)

 f(x)=1e2xf'\left(x\right)=\frac{1}{e^{2x}}  

b)

 f(x)=(1x)exf'\left(x\right)=\frac{\left(1-x\right)}{e^x}  

c)

 f(x)=(ex+x)e2xf'\left(x\right)=\frac{\left(e^x+x\right)}{e^{2x}}  

d)

 f(x)=(exx)exf'\left(x\right)=\frac{\left(e^x-x\right)}{e^x}  

5.

 f(x)=xex+2x3+1, Df(x)=?f\left(x\right)=xe^x+2x^3+1,\ Df\left(x\right)=?  

a)

 f(x)=ex+6x2f'\left(x\right)=e^x+6x^2  

b)

 f(x)=ex+xex+6x2f'\left(x\right)=e^x+xe^x+6x^2  

c)

 f(x)=ex+x+6x2f'\left(x\right)=e^x+x+6x^2  

d)

 f(x)=xex+6x2f'\left(x\right)=xe^x+6x^2  

6.

 f(x)=x2lnx, Df(x)=? f\left(x\right)=x^2\cdot\ln x,\ Df\left(x\right)=?\   

a)

 f(x)=2xlnxf'\left(x\right)=2x\cdot\ln x  

b)

 f(x)=2xlnx+x2f'\left(x\right)=2x\cdot\ln x+x^2  

c)

 f(x)=2xlnx+xf'\left(x\right)=2x\cdot\ln x+x  

d)

 f(x)=2xlnx+lnxf'\left(x\right)=2x\cdot\ln x+\ln x  

7.

 f(x)=x+1x2, Df(x)=?f\left(x\right)=\frac{x+1}{x-2},\ Df\left(x\right)=?  

a)

 f(x)=1(x2)2f'\left(x\right)=\frac{1}{\left(x-2\right)^2}  

b)

 f(x)=3(x2)2f'\left(x\right)=\frac{-3}{\left(x-2\right)^2}  

c)

 f(x)=2x(x2)2f'\left(x\right)=\frac{-2x}{\left(x-2\right)^2}  

d)

 f(x)=3x1(x2)2f'\left(x\right)=\frac{3x-1}{\left(x-2\right)^2}  

8.

 f(x)=x2x1, Df(x)=?f\left(x\right)=\frac{x^2}{x-1},\ Df\left(x\right)=?  

a)

 f(x)=x2(x1)2f'\left(x\right)=\frac{x^2}{\left(x-1\right)^2}  

b)

 f(x)=(x22x)(x1)2f'\left(x\right)=\frac{\left(x^2-2x\right)}{\left(x-1\right)^2}  

c)

 f(x)=x22x+1(x2)2f'\left(x\right)=\frac{x^2-2x+1}{\left(x-2\right)^2}  

d)

 f(x)=x21(x2)2f'\left(x\right)=\frac{x^2-1}{\left(x-2\right)^2}  

9.
La funzione y=1+ln(x) è la derivata di una sola delle seguenti funzioni. Quale?
a)
y=x+1/x
b)
y=x+ln(x)
c)
y=x-ln(x)
d)
y=x⋅ln(x)
10.
La derivata di y=ex⋅cos(x) è:
a)
y'=ex⋅(cos(x)+sin(x))
b)
y'=ex⋅(cos(x)-sin(x))
c)
y'=ex⋅(cos(2x))
d)
y'=cos(x)⋅(ex-sin(x))
11.

 f(x)=exx3+3f\left(x\right)=e^x-x^3+3  

a)

 f(x)=ex+3f'\left(x\right)=e^x+3  

b)

 f(x)=ex3x2f'\left(x\right)=e^x-3x^2  

c)

 f(x)=exx2+3f'\left(x\right)=e^x-x^2+3  

d)

 f(x)=x3f'\left(x\right)=x-3  

12.

 f(x)=x+lnxf\left(x\right)=x+\ln x  

a)

 f(x)=1+1xf'\left(x\right)=1+\frac{\text{1}}{\text{x}}  

b)

 f(x)=x+1f'\left(x\right)=x+1  

c)

 f(x)=x+1xf'\left(x\right)=\frac{x+1}{x}  

d)

 f(x)=x1xf'\left(x\right)=x-\frac{1}{x}  

13.

 f(x)=x3+x2x+1f\left(x\right)=x^3+x^2-x+1  

a)

 f(x)=3x2+2x1f'\left(x\right)=3x^2+2x-1  

b)

 f(x)=3x+2f'\left(x\right)=3x+2  

c)

 f(x)=3x+1f'\left(x\right)=3x+1  

d)

 f(x)=3x2+1f'\left(x\right)=3x^2+1  

14.

 f(x)=(x2)exf\left(x\right)=\left(x-2\right)e^x  

a)

 f(x)=(x1)exf'\left(x\right)=\left(x-1\right)e^x  

b)

 f(x)=(x2)exf'\left(x\right)=\left(x-2\right)e^x  

c)

 f(x)=exf'\left(x\right)=e^x  

d)

 f(x)=1+exf'\left(x\right)=1+e^x  

15.

 f(x)=x1xf\left(x\right)=x-\frac{1}{x}  

a)

 f(x)=1+1x2f'\left(x\right)=1+\frac{1}{x^2}  

b)

 f(x)=11x2f'\left(x\right)=1-\frac{1}{x^2}  

c)

 f(x)=x2+1x2f'\left(x\right)=\frac{x^2+1}{x^2}  

d)

 f(x)=1lnxf'\left(x\right)=1-\ln x  

16.

 f(x)=sinx+cosxf\left(x\right)=\sin x+\cos x  

a)

 f(x)=cosxsinxf'\left(x\right)=\cos x-\sin x  

b)

 f(x)=cosx+sinxf'\left(x\right)=\cos x+\sin x  

c)

 f(x)=cosx+sinxf'\left(x\right)=-\cos x+\sin x  

d)

 f(x)=cosxsinxf'\left(x\right)=-\cos x-\sin x  

17.

 f(x)=sinx+cosx          f(x)=f\left(x\right)=\sin x+\cos x\ \ \ \ \ \rightarrow\ \ \ \ \ f'\left(x\right)=  



(a)  

18.

 f(x)=2x2, Df(x)=?f\left(x\right)=\frac{2}{x^2},\ Df\left(x\right)=?  

a)

 f(x)=2x2f'\left(x\right)=2x^2  

b)

 f(x)=2xf'\left(x\right)=\frac{2}{x}  

c)

 f(x)=2x3f'\left(x\right)=\frac{2}{x^3}  

d)

 f(x)=4x3f'\left(x\right)=-\frac{4}{x^3}  

19.

 f(x)=x+1x2, Df(x)=?f\left(x\right)=\sqrt{x}+\frac{1}{x^2},\ Df\left(x\right)=?  

a)

 f(x)=12x1x3f'\left(x\right)=\frac{1}{2\sqrt{x}}-\frac{1}{x^3}  

b)

 f(x)=12x2x3f'\left(x\right)=\frac{1}{2\sqrt{x}}-\frac{2}{x^3}  

c)

 f(x)=1x1x3f'\left(x\right)=\frac{1}{\sqrt{x}}-\frac{1}{x^3}  

d)

 f(x)=2x1x3f'\left(x\right)=2\sqrt{x}-\frac{1}{x^3}  

20.

 f(x)=x2sinx          f(x)=f\left(x\right)=x-2\sin x\ \ \ \ \ \rightarrow\ \ \ \ \ f'\left(x\right)=  



(a)  

21.

 f(x)=3lnx+2cosx+x2f\left(x\right)=3\ln x+2\cos x+x^2  

a)

 f(x)=3x2senx+2xf'\left(x\right)=\frac{3}{x}-2senx+2x  

b)

 f(x)=1x+2senx+2f'\left(x\right)=\frac{1}{x}+2senx+2  

c)

 f(x)=3x+2senx+2xf'\left(x\right)=\frac{3}{x}+2senx+2x  

d)

 f(x)=3x2cosx+2xf'\left(x\right)=\frac{3}{x}-2\cos x+2x  

22.

La derivata di

 f(x)=xlnxf\left(x\right)=x\cdot\ln x  è

a)

 1lnx\frac{1}{\ln x}  

b)

 lnx+1\ln x+1  

c)

1

d)

 1+1x1+\frac{1}{x}  

23.

 f(x)=x2lnxf\left(x\right)=x^2\cdot\ln x  

a)

 f(x)=2xlnxf'\left(x\right)=2x\cdot\ln x  

b)

 f(x)=2xlnx+x2f'\left(x\right)=2x\cdot\ln x+x^2  

c)

 f(x)=2xlnx+xf'\left(x\right)=2x\cdot\ln x+x  

d)

 f(x)=2xlnx+lnxf'\left(x\right)=2x\cdot\ln x+\ln x  

24.

 f(x)=(x2)exf\left(x\right)=\left(x-2\right)e^x  

a)

 f(x)=(x1)exf'\left(x\right)=\left(x-1\right)e^x  

b)

 f(x)=(x2)exf'\left(x\right)=\left(x-2\right)e^x  

c)

 f(x)=exf'\left(x\right)=e^x  

d)

 f(x)=1+exf'\left(x\right)=1+e^x  

25.

 f(x)=xx2+1f\left(x\right)=\frac{x}{x^2+1}  

a)

 f(x)=(3x2+1)(x2+1)f'\left(x\right)=\frac{\left(3x^2+1\right)}{\left(x^2+1\right)}  

b)

 f(x)=(2x21)(x2+1)2f'\left(x\right)=\frac{\left(2x^2-1\right)}{\left(x^2+1\right)^2}  

c)

 f(x)=(1x2)(x2+1)2f'\left(x\right)=\frac{\left(1-x^2\right)}{\left(x^2+1\right)^2}  

d)

 f(x)=(x21)(x2+1)2f'\left(x\right)=\frac{\left(x^2-1\right)}{\left(x^2+1\right)^2}  

26.

 f(x)=xexf\left(x\right)=\frac{x}{e^x}  

a)

 f(x)=1e2xf'\left(x\right)=\frac{1}{e^{2x}}  

b)

 f(x)=(1x)exf'\left(x\right)=\frac{\left(1-x\right)}{e^x}  

c)

 f(x)=(ex+x)e2xf'\left(x\right)=\frac{\left(e^x+x\right)}{e^{2x}}  

d)

 f(x)=(exx)exf'\left(x\right)=\frac{\left(e^x-x\right)}{e^x}  

27.

 f(x)=x+1x2f\left(x\right)=\frac{x+1}{x-2}  

a)

 f(x)=1(x2)2f'\left(x\right)=\frac{1}{\left(x-2\right)^2}  

b)

 f(x)=3(x2)2f'\left(x\right)=\frac{-3}{\left(x-2\right)^2}  

c)

 f(x)=2x(x2)2f'\left(x\right)=\frac{-2x}{\left(x-2\right)^2}  

d)

 f(x)=3x1(x2)2f'\left(x\right)=\frac{3x-1}{\left(x-2\right)^2}  

28.

f(x)=lnx2xf\left(x\right)=\frac{\ln x-2}{x}  

a)

f(x)=3lnxx2f'\left(x\right)=\frac{3-\ln x}{x^2}  

b)

f(x)=3+lnx2x2f'\left(x\right)=\frac{3+\ln x^2}{x^2}  

c)

f(x)=3lnxx2f'\left(x\right)=\frac{3\ln x}{x^2}  

d)

f(x)=lnx3xf'\left(x\right)=\frac{\ln x-3}{x^{ }}  

29.

 f(x)=tgx=senxcosxf\left(x\right)=tgx=\frac{senx}{\cos x}  

a)

 f(x)=1cos2xf'\left(x\right)=\frac{1}{\cos^2x}  

b)

 f(x)=senxcos2xf'\left(x\right)=\frac{senx}{\cos^2x}  

c)

 f(x)=cosxsenxsen2xf'\left(x\right)=\frac{\cos x-senx}{sen^2x}  

d)

 f(x)=senx+cosxcos2xf'\left(x\right)=\frac{senx+\cos x}{\cos^2x}