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
    yesterday










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










  • @Andreas I know b is wrong
    – Amy Jones
    yesterday






  • 1




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















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
    yesterday










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










  • @Andreas I know b is wrong
    – Amy Jones
    yesterday






  • 1




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













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 yesterday









user376343

2,1441716




2,1441716










asked yesterday









Amy Jones

257




257












  • So which graph do you suppose to be the correct one?
    – Andreas
    yesterday










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










  • @Andreas I know b is wrong
    – Amy Jones
    yesterday






  • 1




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


















  • So which graph do you suppose to be the correct one?
    – Andreas
    yesterday










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










  • @Andreas I know b is wrong
    – Amy Jones
    yesterday






  • 1




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
















So which graph do you suppose to be the correct one?
– Andreas
yesterday




So which graph do you suppose to be the correct one?
– Andreas
yesterday












@Andreas C looks correct to me but I am not sure
– Amy Jones
yesterday




@Andreas C looks correct to me but I am not sure
– Amy Jones
yesterday












@Andreas I know b is wrong
– Amy Jones
yesterday




@Andreas I know b is wrong
– Amy Jones
yesterday




1




1




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




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















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