Exercise 19.1
Find the indefinite integrals of:
1.(i)
Solution:
Or,
(ii)
Solution:
Or,
(iii)
Solution:
Or,
(iv)
Solution:
Or,
2.(i)
Solution:
Or,
(ii)
Solution:
Or,
(iii)
Solution:
=
=
(iv)
Solution:
=
= 2x3 +
(v)
Solution:
=
=
(vi)
Solution:
=
(vii)
Solution:
=
=
(viii)
Solution:
=
(ix)
Solution:
= 3.
(x)
Solution:
= a
= ax + b.logx +
= ax + b.logx –
(xi)
Solution:
=
=
=
3.(i)
Solution:
Or,
(ii)
Solution:
Or,
(iii)
Solution:
Or,
(iv)
Solution:
Or,
=
(v)
Solution:
Or,
=
=
=
(vi)
Solution:
Or,
= 4x +
(vii)
Solution:
Or,
=
=
=
= x + 6.log(x – 3) + c.
(viii)
Or,
=
= 3.
=
= 3x + 5.log(x – 2) + c.
(ix)
Solution:
Or,
=
=
=
=
(x)
Solution:
Or,
=
=
=
=
4.(i)
Solution:
Or,
=
=
=
=
(ii)
Solution:
Or,
=
=
=
=
=
(iii)
Solution:
Or,
=
=
=
=
(iv)
Solution:
Or,
=
=
=
=
(v)
Solution:
Or,
=
=
=
=
=
=
(vi)
Solution:
Or,
=
=
=
=
=
=
=
(vii)
Solution:
=
=
=
=
=
=
=
(viii)
Solution:
=
=
=
=
=
(ix)
Solution:
=
=
= 3.
=
= 2 (x + 1)3/2 + 2(x + 1)1/2 + c.
(x)
Solution:
=
=
=
=
=
=
(xi)
Solution:
=
=
=
=
=
=
(xii)
Solution:
=
=
=
=
=
=
5.(i)
Solution:
Or,
=
=
(ii)
Solution:
Or,
=
=
=
=
=
=
(iii)
Solution:
Or,
=
=
=
=
(iv)
Solution:
Or,
=
=
=
=
=
6.(i)
Solution:
Or,
(ii)
Solution:
Or,
(iii)
Solution:
Or,
(iv)
Solution:
Or,
(v)
Solution:
Or,
=
(vi)
Solution:
Or,
=
(vii)
Solution:
Or,
(viii)
Solution:
Or,
=
=
=
=
=
=
=
=
=
(ix)
Solution:
Or,
=
=
=
=
=
=
=
=
(x)
Solution:
Or,
=
=
=
= tanx – cotx + c.
(xi)
Solution:
Or,
=
=
=
=
=
= –cotx –
= –cotx –
7(i)
Solution:
Or,
=
Solution:
Or,
=
(iii)
Solution:
Or,
=
=
=
(iv)
Solution:
Or,
=
=
(v)
Solution:
Or,
=
=
(vi)
Solution:
Or,
=
=
=
=
=
=
8(i)
Solution:
Or,
=
=
=
=
(ii)
Solution:
Or,
=
=
=
=
(iii)
Solution:
Or,
=
=
=
=
=
(iv)
Solution:
Or,
=
=
=
9.(i)
Solution:
=
(ii)
Solution:
=
=
=
=
(iii)
Solution:
=
=
=
(iv)
Solution:
=