If $$a{x^2} + {b \over x} \ge c$$ for all positive $$x$$ where $$a>0$$ and $$b>0$$ show that $$27a{b^2} \ge 4{c^3}$$.
Answer
Solve it.
2
IIT-JEE 1982
Subjective
If $$f(x)$$ and $$g(x)$$ are differentiable function for $$0 \le x \le 1$$ such that $$f(0)=2$$, $$g(0)=0$$, $$f(1)=6$$; $$g(1)=2$$, then show that there exist $$c$$ satisfying $$0 < c < 1$$ and $$f'(c)=2g'(c)$$.
Answer
Solve it.
3
IIT-JEE 1981
Subjective
Use the function $$f\left( x \right) = {x^{1/x}},x > 0$$. to determine the bigger of the two numbers $${e^\pi }$$ and $${\pi ^e}$$
Answer
$${e^\pi }$$
4
IIT-JEE 1981
Subjective
Let $$x$$ and $$y$$ be two real variables such that $$x>0$$ and $$xy=1$$. Find the minimum value of $$x+y$$.
Answer
$$2$$
Questions Asked from Application of Derivatives
On those following papers in Subjective
Number in Brackets after Paper Indicates No. of Questions