Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cot(5x - 4)
A. y = cot u; u = 5x - 4; 
= - 5 csc2(5x - 4)
B. y = cot u; u = 5x - 4; 
= - 5 cot(5x - 4) csc(5x - 4)
C. y = cot u; u = 5x - 4; 
= - csc2(5x - 4)
D. y = 5u - 4; u = cot x; 
= - 5 cot x csc2 x
Answer: A
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Replace the Cartesian equation with an equivalent polar equation.y = 10
A. r = 10 csc ? B. r = 10 sin ? C. r = 10 sec ? D. r = 10 cos ?
Solve.x2 + 6x - 4 ? 0
A. [-3 - 
, -3 + 
]
B. (-?, -
] ? [
, ?)
C. (-?, -3 - 
) ? (-3 + 
, ?)
D. (-?, -3 - 
] ? [-3 + 
, ?)
Write the formula for Newton's method and use the given initial approximation to compute the approximations x1 and x2. Round to six decimal places.f(x) = x2 - 20; x0 = 5
A. xn+1 = xn + 
; x1 = 4.500000, x2 = 4.472222
B. xn+1 = xn - 
; x1 = 5.500000, x2 = 3.472222
C. xn+1 = 
; x1 = 5.000000, x2 = 4.972222
D. xn+1 = 
; x1 = 4.500000, x2 = 4.472222
Solve the formula for the specified variable.I = 
for R
A. R = 
B. R = kEI
C. R = 
D. R = kE - I