The first relation indicates the bars each drinker visits, the second tells what beers each bar serves, and the last indicates which beer each drinker likes to drink. Express the following queries in relational algebra. If joins are needed, indicate what the condition of the join is: (1) Find the bars that serve a beer that drinker Smith likes. (2) Find the bars that serve all beers that drinker Smith likes.

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.

answer

step-by-step explanation:

answer: i think you should do the math and pay attention in class : )

step-by-step explanation:

that is truly what   think but if i get the answer i will

the answer is a) y= 2 csc [0.5 (x+pi/2)]-1

step-by-step explanation: