254293250-calculus-multivariable-2nd-edition-blank-krantz-vector ...
... 24. r(t) = t2i + 2t2j + 3t3k. 25. r(t) = cos(t)i + sin(t)j + tk. 26. r(t) =ti+ (2/t)j + t2k. 27. r(t) = e1i + e-1j - t2k. 28. r(t) = e1i + te1j + (t + e1)k. 29 ... 
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