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Mathematics 14 Online
OpenStudy (anonymous):

help on a calculus problem for medal!

OpenStudy (turingtest):

trapezoidal approximation means that you pretend that the area under each interval is a trapazoid

OpenStudy (turingtest):

|dw:1420227814192:dw|

OpenStudy (turingtest):

|dw:1420228027195:dw|

OpenStudy (turingtest):

|dw:1420228073508:dw|what is the area of this trapezoid?

OpenStudy (anonymous):

57?

OpenStudy (turingtest):

now, how did you get that?

OpenStudy (turingtest):

no*

OpenStudy (turingtest):

what is the formula for the area of a trapezoid?

OpenStudy (anonymous):

1/2 (b1+b2)*h

OpenStudy (turingtest):

good, so what did you plug into that?

OpenStudy (turingtest):

actually it should be\[\frac12(h_1+h_2)b\]since our trapezoid has two heights

OpenStudy (michele_laino):

please you have to do the same with the remaining trapezoids as @TuringTest has made

OpenStudy (anonymous):

i dont get the next step, thats why i asked you lmao

OpenStudy (michele_laino):

|dw:1420303128866:dw| area=\[(5-2)*\frac{ 2+5 }{ 2 }=\frac{ 21 }{ 2 }=10.5\]

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