Find where is the sum of the first terms of the AP and is the sum of the first terms…

MATHEMATICS · Subjective · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Find

S_{AP}-S_{GP}

where

S_{AP}

is the sum of the first

4

terms of the AP

3,5,7,\ldots

and

S_{GP}

is the sum of the first

4

terms of the GP

3,6,12,\ldots