For the arithmetic progressions write the first term a and the common

1.	For the arithmetic progressions write the first term a and the common difference d:–1.1, – 3.1, – 5.1, –7.1, ……..
Answer» General series is –1.1, – 3.1, – 5.1, –7.1, …….. It is seen that, it’s of the form of a, a + d, a + 2d, a + 3d, ……….. Thus, by comparing these two, we get a = –1.1, a + d = –3.1, a + 2d = –5.1, a + 3d = –71 First term (a) = –1.1 Common difference (d) = (a + d) – (a) = -3.1 – ( – 1.1) ⇒ Common difference (d) = – 2

For the arithmetic progressions write the first term a and the common difference d:–1.1, – 3.1, – 5.1, –7.1, ……..

Answer»

General series is –1.1, – 3.1, – 5.1, –7.1, ……..

It is seen that, it’s of the form of a, a + d, a + 2d, a + 3d, ………..

Thus, by comparing these two, we get

a = –1.1, a + d = –3.1, a + 2d = –5.1, a + 3d = –71

First term (a) = –1.1

Common difference (d) = (a + d) – (a)

= -3.1 – ( – 1.1)

⇒ Common difference (d) = – 2