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Asked by Kishore Kumar

Feb 2, 2014

What is one one and onto function? Explain with example

Answer.

Sol: for x₁≠ x₂ or f(x₁)

Asked by Adarsh Udayan

Jan 20, 2015

₀∫^π/2 log(sinx)dx

Answer.

Let I =

\int_{0}^{π}

Asked by Rajesh

Oct 5, 2013

State and prove de-moivre's theorem,

De-moivre’s theorem:
(cosθ + i sinθ)ⁿ = (cos nθ + i sin nθ) for all n ϵ N
Proof:
We have to prove this theorem u...

Answer (1)

Asked by Anubhav Singh

Feb 24, 2015

There is the probability that a mathematics teacher will give an unannounced test during any class meeting is 1/ 5. If a student is absent twice, what is the probability that he will miss at least one test?

Answer.

GIven that probability that a mathematics teacher will give an unannounced test during any class meeting is 1 / 5.
the probability of not missing the test = 1 - 1/5 = 4/ 5
T...

Asked by Anubhav Singh

Nov 4, 2014

find the probability distribution of number of doublets in three throws of a pair of dice ?

P.S:please tell why there won't be 6⁶points in the sample space ?

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Asked by Sukirtha

Nov 20, 2014

Vertices of a triangle are given by i^+3j^+2k^ , 2i^-j^+k^ and -i^+2j^+3k^ then area of triangle is

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Asked by Anubhav Singh

Feb 9, 2015

what are the direction ratios of a line equally inclined to the axes? How many such lines are there ?

please explain all the necessary steps in detail along with the formulas used and the diagram ?

Answer.

If a line makes angles α,β,ɣ with the axes we have α = β = ɣ .
cos α = cos β = cos ɣ or l = m = n .
l2 + m2 + n2 = 1
l2 + l2...