Q7Short answerExercise 5.4
Show that the sum of an AP whose first term is a, the second term b and the last term c, is equal to ( a + c )(b + c – 2a ) 2 (b – a )
Show that the sum of an AP whose first term is a, the second term b and the last term c, is equal to ( a + c )(b + c – 2a ) 2 (b – a )