human
Sum of elements of an AP in the given range | Function to find sum in the given range.
Find the value of k.
Find the common difference.
Find the sum.
Driver code"
Solution in Python:

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Write me a code to sum of elements of an AP in the given range and the other steps required?
assistant
#Here is code to sum of elements of an AP in the given range and the other steps required.
 def findSum ( arr , n , left , right ) :
	k = right - left ;
	d = arr [ 1 ] - arr [ 0 ] ;
	ans = arr [ left - 1 ] * ( k + 1 ) ;
	ans = ans + ( d * ( k * ( k + 1 ) ) ) // 2 ;
	return ans ;
if __name__ == ' _ _ main _ _ ' :
	arr = [ 2 , 4 , 6 , 8 , 10 , 12 , 14 , 16 ] ;
	queries = 3 ;
	q = [ [ 2 , 4 ] , [ 2 , 6 ] , [ 5 , 6 ] ] ;
	n = len ( arr ) ;
	for i in range ( queries ) :
		print ( findSum ( arr , n , q [ i ] [ 0 ] , q [ i ] [ 1 ] ) ) ;