what is the weightage of differential equations in iit.....??? and what is way to learn english for bitsat in 10 days???????

direct question from differnetial eq is rarely asked, last year a question integer type was

asked from diffential equations ...mixed questions with multiple concepts are asked from

this topic ...

example=> length of subtangent of f(x) is equal to square of absissae , then find area enclosed by curve & line x = 1/2

in first quadrant if curve passes through (1,root2) ...