Answer:
Greek literature is the reason why some English words exist today. Greek roots have been used multiple times throughout history. A lot of the words we use now may be made of Greek roots. Who knows, I have probably said one already!
This is the derivative of a product of functions, therefore the result comes from f'g+g'f where f=5t3 and g=cos(t),
f' is the derivative of f which results from multiplying the coeficient (5) by the exponential (3) which equals 15 and substracting 1 from the exponential. Therefore f'=15t2
g' is the derivative of the function cos(t) which is -sin(t). This we are supposed to know by heart.
So, f'g+g'f= 15t2 cos(t) + (-sin(t) 5t3 )
By multiplying the signs you get: 15t2 cos(t) - sin(t) 5t3
If you use the common factor procedure you get 5t2, the common factor is the biggest number by which you can divide every coefficient in the expression. It also is the biggest exponential you can substract from the expressions that have exponentials. In this case is 5 for the coefficients and t2 for the exponentials. You put the common factors outside the expression multiplying it by the rest.
The result is= 5t2 (3 cos(t) - sin(t) t)
Answer:
The best answer is letter B. meditation.
Explanation:
Meditation as a practice to focus one's attention involves what is described in the question - controlled breathing, assuming certain body positions, minimizing external stimuli. Mindfulness meditation, for instance, has the person focus on their breathing while effortlessly observing his/her thoughts without allowing those thoughts to take over.
We can safely eliminate the other options. Hypnosis is a state of high focus and concentration, but it is induced and makes the person more responsive to suggestion. Consciousness has several definitions, but can be summarized as the awareness of one's own internal and external existence. Dichotic listening happens when a person listens to a type of sound through one ear and another type of sound through the other, simultaneously. Cataplexy is the loss of muscle tone caused by strong emotions.