Recent content by Gp7417

With \lceil x \rceil I want to denote the floor function of x .

I propose this solution, check it out! We must find solution on the positive real axis. Let be x= n + \delta, where n is the integer part and \delta is the fractional part with 0 \leq \delta < 1. Given that x \lfloor x \lfloor x \rfloor \rfloor=82 and x \lfloor x \lfloor x \rfloor \rfloor...

The problem says: 'Find all possibile solutions'. I find this solution numerically. The expression must be the same.

Hi all! I should solve the following equation involving the ceil or floor function: x \cdot \lceil x \cdot \lceil x \rceil \rceil = 82 I have found just one solution 41/9, but I have no idea about how finding the other solutions. Thanks you in advance!

Hi all! I have the following spectrum for a signal force: and this is a zoom in the range of interest: Can I state that this force is capable of exciting the natural frequency of the structure ( in the range 5-30Hz) or the force amplitude in this range is too low compared to the peak...

Is this the right answer? f(t_1,t_2...t_n)=\lambda^n e^{-\lambda \sum_{i=1}^{n}t_i}

Yes the durations can be indipendent.

Determination of a Joint pdf Hi all! Someone can help me with this problem? The duration of a certain type of bulbs has a exponential distribution with known parameter \lambda . Consider a set of n bulbs. Which is the joint pdf of the durations t_{i} of the n bulbs?