in an AP, a and b are first and last term resp.if AP has n+2 term, find the common difference af the AP
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2 is the cmn difference becoz it has no of tearms added into new
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in an AP, a and b are first and last term resp.if AP has n+2 term, find the common difference af the AP
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Heya,
According to the question,
First term of A.P. (a) = a
Last term of A.P. (An) = b
No. of term in A.P. = n + 2
d = ?
We will apply the formula;
An = a + (n - 1)d
putting the values, we get;
b = a + (n+2-1)d
b - a = (n +1)d
d = (b - a)/(n + 1)
So, common difference (d) = (b - a)/(n - 1)
Hope this helps....:)
According to the question,
First term of A.P. (a) = a
Last term of A.P. (An) = b
No. of term in A.P. = n + 2
d = ?
We will apply the formula;
An = a + (n - 1)d
putting the values, we get;
b = a + (n+2-1)d
b - a = (n +1)d
d = (b - a)/(n + 1)
So, common difference (d) = (b - a)/(n - 1)
Hope this helps....:)
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