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Q2(ii):
Write first four terms of the AP, when the first term $a$ and the common difference $d$ are given as follows: (ii) $a = –2, d = 0$

Solution :

Given:

The first term of the Arithmetic Progression (AP), denoted by $a = -2$.

The common difference of the AP, denoted by $d = 0$.

To Find:

The first four terms of the Arithmetic Progression ($a_1, a_2, a_3, a_4$).

Step 1: Understanding the definition of an Arithmetic Progression

An Arithmetic Progression is a sequence of numbers such that the difference between consecutive terms is constant. This constant difference is called the common difference ($d$).

The general form of an AP is given by: $a, a+d, a+2d, a+3d, \dots$

Where:

  • $a_1 = a$
  • $a_2 = a + d$
  • $a_3 = a + 2d$
  • $a_4 = a + 3d$

Step 2: Calculating the first four terms

We substitute the given values $a = -2$ and $d = 0$ into the general formulas defined in Step 1.

Calculation for the first term ($a_1$):

$a_1 = a = -2$

Calculation for the second term ($a_2$):

$a_2 = a + d$

$a_2 = -2 + 0$

$a_2 = -2$

Calculation for the third term ($a_3$):

$a_3 = a + 2d$

$a_3 = -2 + 2(0)$

$a_3 = -2 + 0$

$a_3 = -2$

Calculation for the fourth term ($a_4$):

$a_4 = a + 3d$

$a_4 = -2 + 3(0)$

$a_4 = -2 + 0$

$a_4 = -2$

Step 3: Conclusion

Since the common difference $d$ is $0$, every term in the sequence remains identical to the first term $a$.

Final Answer: The first four terms of the AP are -2, -2, -2, -2.


More Questions from Class 10 Mathematics Arithmetic Progression EXERCISE 5.1


CBSE Solutions for Class 10 Mathematics Arithmetic Progression


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