When we write vectors as matrices, we tend to write an $n$-dimensional vector vector as $n \times 1$ column matrix. We emphasize that the gradient vector is defined only for scalar-valued functions. For vector valued functions, we will stick with viewing the derivative as a matrix.
Gloomy Addiction Relapse Statistics. Drug and alcohol rehab statistics show that the percentage of people who will relapse after a period recovery ranges from 50% to 90%. This is a frightening statistic and it is often used as justification for those who wish to carry on with their addiction.
1 64% - How long does alchol stay after quitting drinking? 2  59% - How long it take to return blood pressure after quitting drinking? 3  24% - My freinds have say they hear me speaken in evil tounge i have no memory of it? 4  39% - Can my brain (memory) recover after years of alcohol abuse? 5  17% - Physcology.