Question

can you solve this today please. with the formula = b-a/ n+1​

Answer 1

let a=-2/5,b=-1/5

=-2/5-(-1/5)/n+1

=-2/5+1/5/n+1

=-1/5×1/n+1

=-1/5n+5

-5/5=1/n

-1/1=1/n

n=-1