How do we solve optimization problems with infinite horizon. I tried to look online for some guidance but nothing but just problems and no solution methods. For example how can I solve:
maximize a_t \in[0,1]
\sum\frac{-2a_t}{3}+log(S_T)
where sum goes from 0 to T-1
subject to: s_t+1 = s_t...
I solved majority of the question I just need to find the last joint density. Found the equations at part 3.
Homework Statement
Show P(X-Y=z ,Y=y) = P(X) = P(|Y|)
I showed P(X) = P(|Y|)
Homework EquationsThe Attempt at a Solution
P(X=x,Y=y) = \frac{2*(2x-y)}{\sqrt{2πT^3σ^6}} *...
Yes this is stochastic. I will explain it more thoroughly:
It is a 2 step question I guess:
t \in[0,T]
X is a Brownian Motion (0, μ, σ^2)
M_T is the Max of X_t
I need to find the joint pdf of (X_T,M_T)
____
An easier question I guess
X is now has a drift 0. Therefore ~ (0, 0...
I have a normally distributed rv,let be X_t, ~ (μ*t,t*σ^2)
what's the distribution of max(X_t) ?
how do we do this? I wanted to simulate but the more I simulate the more the values expand and explode.
Any help?
Or an easier question which can help me solve this. I have a joint cdf of...
so we have:
exp(-r*t) y' - exp(-r*t) r y = theta1 - theta2
I assume you mean
f = exp(-r*t)
g = y
but I'm not sure how to place thetas
so I think y will have a exp(r*t) in it but not sure about the rest.
How do you think those values were found?
The derivative with respect to r is this... according to Mathematica. But I don't know how.
\frac{\sqrt{T}}{\sqrt{2\pi}σ}exp(-(\frac{(T (r + σ^2) + Log[S/K] )}{\sqrt{2 T σ}})^2)
with changing a few things ==
T * Normal PDF(-log(S/K),Tσ^2) at...
So basically I need to derive
∫\frac{1}{\sqrt{2\pi}}exp(\frac{-x^2}{2}) dx
with upper bound
(log(S/K)+(r+σ^2)T)/(σ sqrt(T))
lower bound -inf
with respect to r, Sigma or any parameter so I can learn how to do this.
I was wondering how I can find the derivative of a normal cdf with respect to a boundary parameter?
I can get an answer with Mathematica or something but I have no idea how to actually do this. I don't know how fundamental theorem of calculus can be applied. (if it can be)...