Solve the initial value problem for x as a function of t.(t2 + 4t)
= 4x + 4, x(1) = 1
A. x = 
- 1
B. x = 10 ln
- 1
C. x = 
- 1
D. x = 10t + ln 
- 1
Answer: C
Mathematics
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Find all the second order partial derivatives of the given function.f(x, y) = tan-1 (-3x + 4y)
A. fxx(x, y) = 
;
fyy(x, y) = 
;
fxy(x, y) = fyx(x, y) = 
B. fxx(x, y) = 
;
fyy(x, y) = 
;
fxy(x, y) = fyx(x, y) = 
C. fxx(x, y) = 
;
fyy(x, y) = 
;
fxy(x, y) = fyx(x, y) = 
D. fxx(x, y) = 
;
fyy(x, y) = 
;
fxy(x, y) = fyx(x, y) = 
Mathematics
Evaluate the integral.
A. 46.9 B. 6.70 C. 64.9 D. 11.06
Mathematics
Determine whether the source of error represents random or systematic error.When scientists estimate the height of a mountain there is a certain amount of error involved in measuring distances and angles.
A. Systematic error B. Random error
Mathematics
Evaluate the integral.
A. 
- 
B. 
- 
C. 
- 
D. - 
Mathematics