Given the following code:

 (define (new-sqrt x) (define (good-enough? guess) (< (abs (- (square guess) x)) 0.000001)) (define (average x y) (/ (+ x y) 2)) (define (improve guess) (average guess (/ x guess))) (define (sqrt-iter guess) (if (good-enough? guess) guess (sqrt-iter (improve guess)))) (sqrt-iter 1.0)) (new-sqrt 2.0) 

a) Draw a contour diagram during the evaluation of (new-sqrt) at the beginning of line 12, (before executing (sqrt-iter).

b) Draw a contour diagram at the start of line 11 (during the execution of sqrt-iter, before recursing).

Language is scheme.