Compute r''(t).r(t) = (2 ln(5t))i + (7t3)j
A. r''(t) = 
t-2i + 42tj
B. r''(t) = - 
i + 42tj
C. r''(t) = 
i + 21tj
D. r''(t)= - 
t-2i + 42tj
Answer: B
Mathematics
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