WorksheetsU-sub Day 1
Total questions: 6
Worksheet time: 6mins
Name
Class
Date
1.
what is the choice of u for ∫2x(x²-2)15 dx?
a)
(x²-2)15
b)
x²-2
c)
2x
d)
No u needed
2.
What is the choice of u for ∫ ex(1+ex)(1/2) dx?
a)
ex
b)
1+ex
c)
(1+ex)(1/2)
d)
(ex)(1/2)
3.
What should be assigned to u in the integral?
a)
2x2
b)
sin (2x2)
c)
5x
d)
no u needed
4.
What should be used for u in the integral?
a)
no u needed
b)
4t2
c)
t3
d)
1/4t2
5.
What should "u" equal in this integral?
a)
x
b)
(lnx)/x
c)
lnx
d)
sin(lnx)
6.
Integrate the following indefinite integral via u-substitution ∫2x(x2+4)3dx
a)
2(x2+4)4+C
b)
4(x2+4)4+C
c)
2x(x2+4)4+C
d)
6x(x2+4)2+C
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