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QUIZIZZ 1.1 Integration of Functions

Total questions: 14

Worksheet time: 2hrs 20mins

Name
Class
Date
1.

If x10+6x^{10}+6 is antiderivative of 10x910x^9 , then find  10x9dx\int_{ }^{ }10x^9dx    

a)

 10x9+k, where k=010x^9+k,\ where\ k=0  

b)

 x10+k, where k=6x^{10}+k,\ where\ k=6  

c)

 9x10+k, where k=69x^{10}+k,\ where\ k=6  

d)

 x9+k, where k=0x^9+k,\ where\ k=0  

2.

Is (x+x2)2\left(x+x^2\right)^2 the antiderivative of  2x+6x2+4x32x+6x^2+4x^3 

a)

Yes

b)

No

3.

Find (1(2x2)2)dx\int_{ }^{ }\left(\frac{1}{\left(2x^2\right)^2}\right)dx  

a)

 12x3+c12x^3+c  

b)

 12x3+c-\frac{12}{x^3}+c  

c)

 x312+c\frac{x^3}{12}+c  

d)

 112x3+c-\frac{1}{12x^3}+c  

4.

 (4x5x)dx\int_{ }^{ }\left(\frac{4x-5}{\sqrt{x}}\right)dx  

Find

a)

 83x3210x12+c\frac{8}{3}x^{\frac{3}{2}}-10x^{\frac{1}{2}}+c  

b)

 43x12+10x+c\frac{4}{3}x^{\frac{1}{2}}+\frac{10}{\sqrt{x}}+c  

c)

 38x325x12+c\frac{3}{8}x^{\frac{3}{2}}-5x^{\frac{1}{2}}+c  

d)

 43x12+1032+c\frac{4}{3}x^{\frac{1}{2}}+10^{\frac{3}{2}}+c  

5.

Given f(x)=1x3f\left(x\right)=\frac{1}{x^3} and  g(x)=x+xg\left(x\right)=x+\sqrt{x} . Find  (f(x)2g(x))dx\int_{ }^{ }\left(f\left(x\right)-2g\left(x\right)\right)dx   

a)

 1x213x2+43x32+c\frac{1}{x^2}-\frac{1}{3}x^2+\frac{4}{3}x^{\frac{3}{2}}+c  

b)

 12x223x2+4x32+c\frac{1}{2x^2}-\frac{2}{3}x^2+4x^{\frac{3}{2}}+c  

c)

 12x2x243x32+c-\frac{1}{2x^2}-x^2-\frac{4}{3}x^{\frac{3}{2}}+c  

6.

If p,q and r are constants, find (px2+1qx2+r)dx\int_{ }^{ }\left(px^2+\frac{1}{qx^2}+r\right)dx  


a)

 x33p12qx+rx+c\frac{x^3}{3p}-\frac{1}{2qx}+rx+c  

b)

 px331qx+rx+c\frac{px^3}{3}-\frac{1}{qx}+rx+c  

c)

 px3+1qxrx+cpx^3+\frac{1}{qx}-rx+c  

7.

Evaluate ((t21)t+1)dt\int_{ }^{ }\left(\frac{\left(t^2-1\right)}{t+1}\right)dt 

Hint: Simplify the function before integrating 

a)

 t2t+ct^2-t+c  

b)

 t22t+c\frac{t^2}{2}-t+c  

c)

 t22+t+c-\frac{t^2}{2}+t+c  

d)

 t2+3t+ct^2+3t+c  

8.

Find 3(4x)3dx\int_{ }^{ }\frac{3}{\left(4-x\right)^3}dx  

a)

 32(4x)2+c\frac{3}{2\left(4-x\right)^2}+c  

b)

 34(4x)4+c\frac{-3}{4\left(4-x\right)^4}+c  

c)

 3(4x)2+c\frac{-3}{\left(4-x\right)^2}+c  

9.

 (1e2t)(2+e3t)dt\int_{ }^{ }\left(1-e^{-2t}\right)\left(2+e^{3t}\right)dt  

a)

 2t+et2e3t3e2t+c-2t+e^t-\frac{2e^{3t}}{3}-e^{2t}+c  

b)

 te2t+e3t4et+ct-e^{2t}+\frac{e^{3t}}{4}-e^t+c  

c)

 2t2+ete3t3et+c2t^2+e^{-t}-\frac{e^{3t}}{3}-e^t+c  

d)

 2t+e2t+e3t3et+c2t+e^{-2t}+\frac{e^{3t}}{3}-e^t+c  

10.

Find (6x12x)e(3x2x)dx\int_{ }^{ }\left(6x-\frac{1}{2\sqrt{x}}\right)e^{\left(3x^2-\sqrt{x}\right)}dx  

a)

 3x2x+c3x^2-\sqrt{x}+c  

b)

 e(3x2x)+ce^{\left(3x^2-\sqrt{x}\right)}+c  

c)

 e3x2+x+ce^{-3x^2+\sqrt{x}}+c  

d)

 6x12x+c6x-\frac{1}{2\sqrt{x}}+c  

11.

Integrate (2x4)(32x+1)dx\int_{ }^{ }\left(\frac{2}{x-4}\right)-\left(\frac{3}{2x+1}\right)dx  

a)

 2lnx432ln2x+1+c2\ln\left|x-4\right|-\frac{3}{2}\ln\left|2x+1\right|+c  

b)

 2lnx4+12ln2x+1+c-2\ln\left|x-4\right|+\frac{1}{2}\ln\left|2x+1\right|+c  

c)

 12lnx4+3ln2x+1+c\frac{1}{2}\ln\left|x-4\right|+3\ln\left|2x+1\right|+c  

12.

Find (24x24e2x4x3+e2x)dx\int_{ }^{ }\left(\frac{24x^2-4e^{-2x}}{4x^3+e^{-2x}}\right)dx  .


Hint: You need to use factorise the function in the numerator. 

a)

 32ln4x3+e2x+c-\frac{3}{2}\ln\left|4x^3+e^{-2x}\right|+c  

b)

 12ln4x3+e2x+c-\frac{1}{2}\ln\left|4x^3+e^{-2x}\right|+c  

c)

 ln4x3+e2x+c\ln\left|4x^3+e^{-2x}\right|+c  

d)

 2ln4x3+e2x+c2\ln\left|4x^3+e^{-2x}\right|+c  

13.

Integrate (12x+8x)(ln(2x)+4x2)2dx\int_{ }^{ }\left(\frac{-1}{2-x}+8x\right)\left(\ln\left(2-x\right)+4x^2\right)^2dx  

a)

 (ln(2x)+4x2)33+c\frac{\left(\ln\left(2-x\right)+4x^2\right)^3}{3}+c  

b)

 (ln(2x)+4x2)3+c-\left(\ln\left(2-x\right)+4x^2\right)^3+c  

c)

 (12x+8x)22+c\frac{\left(-\frac{1}{2-x}+8x\right)^2}{2}+c  

d)

 12x+8x+c-\frac{1}{2-x}+8x+c  

14.

Find (32x)e3xx2dx\int_{ }^{ }\left(3-2x\right)e^{3x-x^2}dx  

a)

 e32x+ce^{3-2x}+c  

b)

 e3xx2+ce^{3x-x^2}+c  

c)

 3xx2+c3x-x^2+c  

d)

 32x+c3-2x+c