Question

Ma = n/p solve for a

Answer 1

Answer;

Now we have to calculate a

Putting d =-1 in (2)

a + (n-1) d =m

a + (n-1) x (-1) = m

a-n+1= m

a= m +n-1

For ph term,

we use the formula,

a, =a+ (n-1)d

putting n =p, d= -1 and a = m +n-1

a, = (m +n-1) + (p-1) (-1)

= m +n-1+(-p+ 1)

= m +n-1-p+1

= m +n-p

Thus, pih term = m +n-p