. For the following APs, write the first term and the common difference


first  term

Best Answer

Solution:

Here, first term a = 3

Now,

The Common difference of the A.P. can be calculated as:

a4 – a3

= - 3 – ( -1)

= - 3 + 1

= - 2

a3 – a2

= - 1 – 1

= - 2

a2 – a1

= 1 – 3

= - 2

Now, hereak+1 – ak = - 2 for all values of k

Hence, first term = 3 and common difference = - 2

ii. a4 – a3

= 7 – 3

= 4

a3 – a2

= 3 – (-1)

= 3 + 1

= 4

a2 – a1

= - 1 – (-5)

= - 1 + 5]

= 5

Now, here, ak+1 – ak = - 2 for all values of k

Therefore, first term = - 5 and common difference = 4

first term

Therefore,

First term = 0.6 and common difference = 1.1

 

first term

 

 

 

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