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Ask KERALA Class 11 Science Mathematics question free ×

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KERALA Class 11 Science Mathematics Free Doubts and Solutions

Kerala - XI Science - Mathematics

Find 3nP4=5(n-1)P4 , for n>4 ?   (From 7th chapter permutations and combinations.)

Asked by antonyjojy999 15th January 2016, 7:11 PM
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Kerala - XI Science - Mathematics - Sequences and Series

If the sum of a certain no. of terms of the A.P. 25,22,19,...is 116.Find the last term.

Asked by mythili Suresh 2nd September 2015, 8:14 PM
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Kerala - XI Science - Mathematics - Principle of Mathematical Induction

P(n): 1+3+3^2+.....+3^n-1=(3^n-1)/2.
If P(k) is true prove P(k+1) is true. 

Asked by Deebu 1st February 2015, 4:08 PM
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Kerala - XI Science - Mathematics - Relations and Functions

Draw the graph of the function f(x)=x+1,where x is an element of R.
 
[please explain why the graph is a V shape and not a slanding line. Isn't V shape the graph for modulus function?]

Asked by Deebu 1st February 2015, 1:19 PM
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Kerala - XI Science - Mathematics - Limits and Derivatives

Find the derivative of f(x)=Sin x using the first priciple.
[I got everything till the last step. How can cos(x+(h/2)).(sin h/2)/(h/2)=cosx.1?]
 
[also in short what exatly is the first principle?]
 
 
 
 
 
 
 
 
 
 
 

Asked by Deebu 1st February 2015, 1:31 AM
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Kerala - XI Science - Mathematics - Limits and Derivatives

Find the distence between 4x-3y-9=0 and 8x-6y-21=0

Asked by Deebu 28th December 2014, 12:29 AM
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Kerala - XI Science - Mathematics - Limits and Derivatives

Find the term indipendent of x in (((3/2)x^2) - (1/3x))^6

Asked by Deebu 28th December 2014, 12:27 AM
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Kerala - XI Science - Mathematics - Limits and Derivatives

Find the locus of the set of points P such that distence from A(2,3,4) is equal to twice the distence from B(-2,1,2).
 
[ I took P as (x,y,z) and found distence from A and distence from B. Now what?]

Asked by Deebu 28th December 2014, 12:23 AM
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Kerala - XI Science - Mathematics - Limits and Derivatives

Find the point which trisect (4,0,1),(2,4,0).

Asked by Deebu 28th December 2014, 12:20 AM
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