Questions Answered

Dahn:
Group Title
My question is this: If you roll a 6sided die 6 times, what is the probability that you'll get k different numbers for k=(1,...,6). I can w…
 updated one year ago
 7 replies
 1 Medal

Dahn:
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I'd like to prove this infinite series formula. Any hints will be very appreciated, thanks.
(Writing the sum in the first post)
 updated one year ago
 10 replies
 1 Medal

Dahn:
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Could comebody identify this function? I'm rather clueless! It does not have an upper bound. https://fbcdnsphotosa.akamaihd.net/hphotosak…
 updated 2 years ago
 9 replies
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Dahn:
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I'm clueless on the reasoning of this:
We can define norm of a vector v as:
v=sqrt(<v,v>)
…
 updated 2 years ago
 8 replies
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hoya:
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a. in the following diagram, the angle <DAC = 40(degree) the angle <CAB=26. from A to C =120ft distance. find the distance between B and D.…
 updated 2 years ago
 10 replies
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OlegP:
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How to prove that a linear transformation is an isomorphism?
 updated 2 years ago
 2 replies
 2 Medals

jonathanbae:
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Find the product.
(3p^4)^3 · (p^2)^7
…
 updated 2 years ago
 4 replies
 1 Medal

Dahn:
Group Title
Inner product space question: I have trouble understanding this equality.
<x,y>^2=<x,y>conj(<x,y>)
Where z is absolute value of z
…
 updated 2 years ago
 6 replies
 1 Medal

2_jenny_9:
Group Title
how do you compute this indefinite integral
∫tan(2x)dx
thanks in advance
 updated 2 years ago
 3 replies
 1 Medal

sarkari:
Group Title
What characteristics of the graph of a function can we discuss by using the concept of differentiation (first and second derivatives).
 updated 2 years ago
 3 replies
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