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Mathematics 21 Online
OpenStudy (anonymous):

question 5, help please

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

for each one, you can plot a bunch of points and draw a curve through those points

jimthompson5910 (jim_thompson5910):

so for instance, if x = 0, then y = x^3 y = 0^3 y = 0 so (0,0) is on y = x^3 and... if x = 1, then y = x^3 y = 1^3 y = 1 and (1,1) is also on y = x^3 if x = 2, then y = x^3 y = 2^3 y = 8 which means (2,8) is also on y = x^3

OpenStudy (anonymous):

is there any quicker way? that seems very tedious?

jimthompson5910 (jim_thompson5910):

so plot those points (and more for better accuracy), then draw a curve through them to graph the function

jimthompson5910 (jim_thompson5910):

well you could graph the basic shape from memory, the equation y = x^3 is a cubic which looks like this |dw:1378668014550:dw|

OpenStudy (anonymous):

ok thx :) ill just learn off the shape of those graphs then, thx a bunch !

jimthompson5910 (jim_thompson5910):

they don't have to be accurate since they rough sketches, so you can use this quicker method you're welcome

OpenStudy (anonymous):

ok thx again!

jimthompson5910 (jim_thompson5910):

np

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