In an A.P. (with usual notations):

In an A.P. (with usual notations) :
(i) given a = 5, d = 3, a_n = 50, find n and S_n
(ii) given a = 7, a₁₃ = 35, find d and S₁₃
(iii) given d = 5, S₉ = 75, find a and a₉
(iv) given a = 8, a_n = 62, S_n = 210, find n and d
(v) given a = 3, n = 8, S = 192, find d.

Solution:

More Solutions:

• Find the values of a and below.
• Determine the matrices, find x.
• Find the matrix B if A [4 1 2 3] and A² = A + 2B
• Solve the matrix, compute (AB)C = (CB)A.
• Find the each of the following and state it they are equal (A + B)(A – B).
• If A = and A² = I, find x,y.