Problems 60+

Problem No. 75

Problem No. 75

by 123iitjee.com Support -
Number of replies: 0
Find all numbers \(\alpha\) for which \(
\int\limits_1^2 {\left[ {\alpha ^2 + (4 - 4\alpha )x + 4x^3 } \right]dx \le 12}
\)
.

Submission Closed, Answer: 3

Cracked By:
  • Anit Kumar Sahu, 12th, Ispat English Medium School, Sector-20, Rourkela. Anit has qualified in IIT JEE 2008.
  • Ankul Garg, 12th Pass, Bal Bharati Public School, Rohini, Delhi. Ankul has qualified in IIT JEE 2007.
  • Lokesh Sardana, 12th Pass, D.A.V. School, Fatehabad, Haryana.