Can anyone tell me if my choice is right? This is my last attempt











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I choose c



because the left most rectangle is $f(-x) = -1$
height is still $1$
height of 2nd rectangle $f(-pi/2)=0$
height of 3rd rectangle $f(0)=0$
right most rectangle $f(pi/2)=0$






calculus







share|cite|improve this question
























  • So which graph do you suppose to be the correct one?
    – Andreas
    14 hours ago










  • @Andreas C looks correct to me but I am not sure
    – Amy Jones
    14 hours ago










  • @Andreas I know b is wrong
    – Amy Jones
    14 hours ago






  • 1




    Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
    – Andreas
    14 hours ago















up vote
0
down vote

favorite












I choose c



because the left most rectangle is $f(-x) = -1$
height is still $1$
height of 2nd rectangle $f(-pi/2)=0$
height of 3rd rectangle $f(0)=0$
right most rectangle $f(pi/2)=0$






calculus







share|cite|improve this question
























  • So which graph do you suppose to be the correct one?
    – Andreas
    14 hours ago










  • @Andreas C looks correct to me but I am not sure
    – Amy Jones
    14 hours ago










  • @Andreas I know b is wrong
    – Amy Jones
    14 hours ago






  • 1




    Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
    – Andreas
    14 hours ago













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I choose c



because the left most rectangle is $f(-x) = -1$
height is still $1$
height of 2nd rectangle $f(-pi/2)=0$
height of 3rd rectangle $f(0)=0$
right most rectangle $f(pi/2)=0$






calculus







share|cite|improve this question















I choose c



because the left most rectangle is $f(-x) = -1$
height is still $1$
height of 2nd rectangle $f(-pi/2)=0$
height of 3rd rectangle $f(0)=0$
right most rectangle $f(pi/2)=0$






calculus




calculus






share|cite|improve this question















share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited 14 hours ago









user376343

2,1041716




2,1041716










asked 15 hours ago









Amy Jones

257




257












  • So which graph do you suppose to be the correct one?
    – Andreas
    14 hours ago










  • @Andreas C looks correct to me but I am not sure
    – Amy Jones
    14 hours ago










  • @Andreas I know b is wrong
    – Amy Jones
    14 hours ago






  • 1




    Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
    – Andreas
    14 hours ago


















  • So which graph do you suppose to be the correct one?
    – Andreas
    14 hours ago










  • @Andreas C looks correct to me but I am not sure
    – Amy Jones
    14 hours ago










  • @Andreas I know b is wrong
    – Amy Jones
    14 hours ago






  • 1




    Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
    – Andreas
    14 hours ago
















So which graph do you suppose to be the correct one?
– Andreas
14 hours ago




So which graph do you suppose to be the correct one?
– Andreas
14 hours ago












@Andreas C looks correct to me but I am not sure
– Amy Jones
14 hours ago




@Andreas C looks correct to me but I am not sure
– Amy Jones
14 hours ago












@Andreas I know b is wrong
– Amy Jones
14 hours ago




@Andreas I know b is wrong
– Amy Jones
14 hours ago




1




1




Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
– Andreas
14 hours ago




Well, it says "$c_k$ is the left endpoint" so indeed C looks fine.
– Andreas
14 hours ago















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