Simplify.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (1 + t)i + (3 + ln(cos t))k, -?/2 < t < ?/2
A. N(t) = (-cos t)i - (ln(cos t))k B. N(t) = (-sin t)i - (cos t)k C. N(t) = (-cos t)i - (tan t)k D. N(t) = (cos t)i + (sin t)k
Mathematics
Find the product of the polynomials.(4m2 - 2m + 2)(m2 - 3m - 1)
A. 4m4 - 14m3 + 2m2 - 4m - 2 B. 4m4 - 12m3 + 4m2 - 4m - 2 C. 4m4 - 14m3 + 4m2 - 4m - 2 D. 4m4 - 12m3 + 2m2 - 4m - 2
Mathematics
Solve the equation. Express radicals in simplest form.
= 
+ 
A. {1}
B. 
C. 
D. ?
Mathematics
Determine whether the equation defines y as a function of x. y = ± 
A. function B. not a function
Mathematics