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R code for generating the graph for the Trip Lab in AP Calculus AB.
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library("ggplot2") | |
library("ggalt") | |
odo <- data.frame(time = seq(0, 600, 15), speed = c(0, 5.866666667, 5.866666667, 11.73333333, 33.73333333, 30.8, 33.73333333, 7.333333333, 45.46666667, 48.4, 45.46666667, 30.8, 32.26666667, 55.73333333, 55.73333333, 0, 0, 48.4, 58.66666667, 45.46666667, 45.46666667, 16.13333333, 33.73333333, 74.8, 73.33333333, 70.4, 60.13333333, 45.46666667, 48.4, 57.2, 55.73333333, 49.86666667, 46.93333333, 30.8, 35.2, 33.73333333, 30.8, 35.2, 30.8, 30.8, 27.86666667)) | |
ggplot(odo, aes(odo$time, odo$speed)) + geom_point(aes(x = time, y = speed), stat = "identity") + ggtitle("Speed of a Car Over a 10 Minute Interval") + xlab("Time (s)") + ylab("Speed (ft/s)") + geom_smooth() + geom_xspline() + scale_x_continuous(breaks = round(seq(min(odo$time), max(odo$time), by = 30), 1)) + scale_y_continuous(breaks = round(seq(min(odo$speed), max(odo$speed), by = 5), 1)) | |
lhs = 30*sum(odo$speed[seq(1, 40, 2)]) | |
rhs = 30*sum(odo$speed[seq(3, 41, 2)]) | |
midpoint = 30*sum(odo$speed[seq(2, 40, 2)]) | |
trap = 30*sum(rowMeans(embed(odo$speed[c(TRUE, FALSE)], 2))) |
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