Find the curvature of the space curve.r(t) = (9 t sin t + 9 cos t)i + 9j + (9t cos t - 9 sin t)k

A. ? = - 
B. ? = 
C. ? = 9t
D. ? = 

Answer: D

Mathematics

You might also like to view...

Write each rational expression as an equivalent expression with the LCD of the two expressions as the denominator. and 

A. ; 
B. ; 
C. ; 
D. ; 

View
Mathematics

Write the system of linear equations represented by the augmented matrix. Then use back-substitution to solve. (Use variables x, y, and z.)

A. x = 35, y = -3, z = 1 B. x = 4, y = 1, z = 5 C. x = 1, y = -4, z = -5 D. x = 1, y = 4, z = 5 E. x = -4, y = 5, z = -1

View
Mathematics

Write the decimal in numbers.Six hundred nine and four thousandths

A. 600.940 B. 600.904 C. 609.04 D. 609.004

View
Mathematics

Solve the equation. = 30

A. {-6, 0} B. {-6, 6} C. {0, 6} D. {6}

View
Mathematics