Find the derivative of y.y = -2t3 tanh 

A. -6t2 tanh  + 4 sech 
B. -6t2 tanh  + 4 sech2 
C. -6t2 tanh  - 4 sech2 
D. -6t2 tanh  + 2 sech2 

Answer: B

Mathematics

You might also like to view...

Calculate the instantaneous velocity for the given value of t of an object moving with rectilinear motion according to the given function relating s (in ft) and t (in s)s = t3 + t2 - 6t - 7; t = -3

A. -14 ft/s B. 14 ft/s C. 15 ft/s D. 21 ft/s

View
Mathematics

Solve the problem.Two cards are drawn in order from a well shuffled deck of 52 cards. The probability that both cards are hearts is given by

A.  ×  .

B.  .
C.  ×  .

D.  ×  .

E. none of these

View
Mathematics

Perform the desired operation. Write the answer in the form a + bi.(7 - 3i)2

A. 49 - 42i + 9i2 B. 58 - 42i C. 40 - 42i D. 40

View
Mathematics

Find the least common multiple of the given polynomials.x2 - 5x - 24, x2 - 9, x2 - 11x + 24

A. (x + 8)(x + 3)(x - 3) B. (x + 8)(x - 3)2 C. (x - 8)(x + 3) D. (x - 8)(x + 3)(x - 3)

View
Mathematics