[Periodic energy usage] The 168-vector −→w gives the hourly electricity consumption of a manufacturing plant, starting on Sunday midnight to 1AM, over one week, in MWh (megawatt-hours). The consumption pattern is the same each day, i. e., it is 24-periodic, which means that wt+24 = wt for t = 1, · · · , 144. Let −→d be the 24-vector that gives the energy consumption over one day, starting at midnight. 1. Use vector notation to express −→w in terms of −→d.
2. Use vector notation to express −→d in terms of −→w.

no he doesnt because "-16' is negatiive

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.