15. If n is a root of the equation x* (1 - ac) - x (a'...

 

Transcribed Image Text:

15. If n is a root of the equation x* (1 - ac) - x (a' + e) -(1 + ac) = 0 & if n HM's are inserted between a & c, show that the difference between the first & the last mean is equal to ac (a - c). 16. The values of xyz is 15/2 or 18/5 according as the series a, x, y, z, b is an AP or HP. Find the values of a &b assuming them to be positive integer. 16.ANS:a=1,b=3 or a=3,b=1 15. If n is a root of the equation x* (1 - ac) - x (a' + e) -(1 + ac) = 0 & if n HM's are inserted between a & c, show that the difference between the first & the last mean is equal to ac (a - c). 16. The values of xyz is 15/2 or 18/5 according as the series a, x, y, z, b is an AP or HP. Find the values of a &b assuming them to be positive integer. 16.ANS:a=1,b=3 or a=3,b=1