Y = t*e^(-t/2)
y' = t' [e^(-t/2)] + t [e^(-t/2)]' = e^(-t/2) + t[e^(-t/2)][-1/2]=
y' = [e^(-t/2)] [1 - t/2] = (1/2)[e^(-t/2)] [2 - t] = - (1/2) [e^-t/2)] [t -2]
Step-by-step explanation:
first take an inequality .remove the inequality sign and then draw its graph .
now put the value x=y=0 in the inequality equation to check if its within the graph .if it satisfies the eqn then shade that part of the line which has the origin in it .similarly do for other inequalities.
you will/may get a polygon .it may be bounded or not. now by fundamental theory of lpp, obtain the terminal points
and get the values of x and y. calculate the respective value of fx and find the maximum and minimum of them .the answer will be the respective x and y values.
you can comment me to do a sum of other questions
Area = length x width
Perimeter = 2(l + w)
Let's imagine one of the sides is 6. The other side would have to be two, and the perimeter would be 16.
If one of the sides is 4, the perimeter would be 14.
If one of the sides is 1, the perimeter would be 26.
Answer:
1.7 hours
Step-by-step explanation:
6.25/1.25= 5
8.5/5= 1.7
It would take Fred 1.7 hours to run 8.5 miles.
