19ans 1> E
n=4 and m=2
(1)If no of ordered pairs (x,y) satisfying lyl = cosx & y = sin-1(sinx) is m when l x l≤2∩ &
n when l x l ≤ 3∩
Then
A)m+n = 0
B)m+n =2
C)m+n =10
D)n-m =0
E)n-m=2
(2)If the no of solutions of ln l sinx l = -x2 + 2x , x ε [0,Π] is m
& x ε [-Π/2,3Π/2] is n
Then ,
Same options as abv
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4 Answers
62FOR QUESTION 1,
Use the graph fo the two functions...
Can you?
.
Same for the second quesiton.. both require graphs to solve..
if you cant think .. then i will try and post the solution to this [1]
4Thanks Nishant Sir
I got the probs by using graph as u said(one graph was given in qs paper under comprehension)
But it takes a lot of time to draw n put them here
That's y i din't post the soln
Sorry
62It is fine uttara.. it does take a lot of time to draw them on a computer.. but on a paper, i find it sometimes the easiest way to solve such problems
[1]