how to solve questions like to find the first negative term for some AP.

Dear user!

Hope! You got the procedure for solving such equations.

It can be understood easily by solving an example.

Example:

Which term of the A.P. 20, 18, 16, 14, … is the first negative term?

Here, first term, a = 20 and common difference, d = 18 – 20 = –2.

Let the n^th term of the given A.P. be the first negative term.

Hope! You can easily solve such type of problem.

All the best!