Question

The first term a and common difference d and given. first four terms of A.P. a=-1,d=-1/2.​

Answer 1

Answer:

-1 , -3/2 , -2 , -5/2

Step-by-step explanation:

nth term of an Arithmetic Progression is given by:

$a+(n-1)d$

where a is the first term and d is the common difference.

First 4 terms would be

1: $a+(1-1)d = a = -1$

2: $a+(2-1)d = a + d = -1 -\frac{1}{2} = -\frac{3}{2}$

3: $a+(3-1)d = a +2d = -1 -2 * \frac{1}{2} = -2$

4: $a+(n-1)d = a+3d = -1 -\frac{3}{2} = -\frac{5}{2}$

   

Answer 2

Given

First term(a)=-1

common difference (d)= -1/2

TO FIND

First four terms of A.P i.e, t1,t2,t3,t4

SOLUTION

t1=a= -1

t2= a+d= -1+(-1/2)=-3/2

t3= a+2d= -1+2×-1/2=-2

t4= a+3d= -1+3×-1/2= -5/2

CONCLUSION

-1,-3/2,-2,-5/2 are the first four terms of A.P