if a is a real non-zero real no. and b is positive real no.
2ba^4 + ba^3 + a^2 + ba + 2b = ka^2
least possible value of k??????

1.2b+1
2.2b-1.
3.2-33b/4.
4.2+33b/4.

• 2ba^4 + ba^3 + a^2 + ba + 2b = ka^2
  2ba^4 + ba^3 + a^2(1-k) + ba + 2b = 0
  a^4 + (a^3)/2 + a^2(1-k)/2b + a/2 = 0
  
  For min value of k,
  
  (1-k)/2b = -1
  k-1 =2b
  k=2b+1 ..... option 1
  
  
  
  
• 12 years agoHelpfull: Yes(0) No(0)