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Best_Mathematician
 2 years ago
calculus help...last two questions...
Best_Mathematician
 2 years ago
calculus help...last two questions...

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Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0@electrokid can u help me with last two

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1how were you able to solve the first ones? You have to picture it and draw it first. Just a little bit of imagination gives the answer right away.

FibonacciChick666
 2 years ago
Best ResponseYou've already chosen the best response.0so you got the first three right? now you want a function that shows \[2[ \mathsf { {r}}(t)]\] So what was our original r(t)

FibonacciChick666
 2 years ago
Best ResponseYou've already chosen the best response.0btw this isn't dif eq

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0r(t) = (tsint)i + (1cost)j so if it is 2[r(t)] = (2t2sint)i + (22cost)j is it correct?

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0@electrokid is this what you talking about? dw:1367589459350:dw i got this part but what abt rest part @FibonacciChick666 r(t) = (tsint)i + (1cost)j so if it is 2[r(t)] = (2t2sint)i + (22cost)j is it correct?

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1367594323679:dw this is the diagram I was talking about

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0how does this diagram relates with vectors

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1dw:1367594594073:dw r(t) is the position vector of that small balck strip

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0oh gotcha...so circumference is the vector function that models the behavior

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1r(t) is the vector function linear distance travelled is easier to analyse by considering curcumference distances

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1r(t) is the position of that small strip on the bigger loop with radius R "r" = radius of smaller loop (confusing symbol, so use another one maybe "a" find a relation between R and "a"

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1then what is the relation between "r(t)" and R?

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0r(t) = 4piR...?

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0wait r(t) = 2R...correct?

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0wow...how did u do that

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1never mind how. but do you see how the question works?

electrokid
 2 years ago
Best ResponseYou've already chosen the best response.1I'll let @FibonacciChick666 continue from here

Best_Mathematician
 2 years ago
Best ResponseYou've already chosen the best response.0ya circumference is equal to 2pi. It takes 6seconds approx for that circle to complete one revolution
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