Question

Find d of an A.P. whose first two terms are -3 and -4.
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Answer 1

Answer:

Question

✳️Find d of an A.P. whose first two terms are -3 and -4.

Solution ⬇️

✍️Given : t1=-3 , t2=-4

✍️to find : common difference =d

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✍️ formula : t2 - t1

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✍️t2-t1=-4-(-3)=-4+3=-1

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➡️Common difference (d)=-1

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Extra formulae

• to find common difference : t2 - t1
• to find 2nd and 3rd term : t1+d,t2+d
• to find sum :
• $= = > sn = \frac{n}{2} (2a + (n - 1) \times d)$
• to find normal sum : tn=a+(n-1)XD

Step-by-step explanation:

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