If the sum of the first 6 terms of an A.P. is 36.

If the sum of the first 6 terms of an A.P. is 36 and that of the first 16 terms is 256, find the sum of the first 10 terms.

Solution:

Show that a₁, a₂, a₃, … form an A.P. where a_n is defined as a_n = 3 + 4n. Also, find the sum of the first 15 terms.

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.