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Material Type: Exam; Class: Plane Trigonometry; Subject: Mathematics; University: West Virginia University; Term: Fall 2000;
Typology: Exams
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Version 1
Circle your answer on the sheet and also mark your answer on the answer sheet. If you change your answer change in both places. dne denotes does not exist
Given f(x) = -6/x , find f'(3). A) 6/3 B) 0 C) โ2 D) 1/3 E) -6x^2 AE) 2/3 BE) dne CE) โ9/5 DE) none of the above
Given f(x) = (3x + x^2 )^5 , find f'(-1). A) 80 B) 0 C) 1 D) 85 E) 15 AE) -32 BE) -10 CE) dne DE) none of the above
Given f(x) = x^2 + x + 1, find all x at which f(x) has a horizontal tangent line A) 1 B) 0 C) 5 D) no such x E) ยฑ AE) 0, ยฑ1/2 BE) 0, 1 CE) โ1/2 DE) none of the above
Given f(x) = 3x^2 + x - 2 , find f'(2). A) 6x B) dne C) 4 D) 11 E) 0 AE) 14 BE) 13 CE) 12 DE) none of the above
Given f(x) = (x + 2x^2 )(4x - 3), find f'(x). A) (x + 2x^2 )(4x - 3) B) (1 + 4x) C) (1 + 2x^2 )( 4x - 3)+ 4(x + 2x^2 ) D) (1 + 4x)(4x - 3) E) (x + 2x^2 )/(4x - 3) AE) (1 + 4x)(4x - 3)+ 4(x + 2x^2 ) BE) (x + 2x^2 )^2 CE) 8x^3 - 14x^2 - 3x DE) none of the above
Given f(x) = (1 + 2x^2 )/(3x - 2), find f'(-1). A) โ29/25 B) 0 C) 3 D) โ11/5 E) -4/ AE) 11/5 BE) 11/25 CE) dne DE) none of the above
Given f x x
, find f'(16).
A) 7 B) โ7/128 C) โ7/8 D) โ7/2 E) 0 AE) 7/16 DE) 7/4 CE) 6.78125 DE) none of the above
A) fโ dne at (1, 0) and fโ is equal 0 at (0, 1) B) fโ equal to 0 at (1, 0) C) fโ dne 0 at (0, 1) D) fโ exists for all x E) fโ is equal to 0 for all x AE) cannot say anything about fโ without formula BE) fโ is never negative CE) fโ is positive at (1, 0) DE) none of the above
h
f x h f x โ h
0
A) 9x^2 - 2 B) x^2 - 2 C) 18x + h D) 18x E) 18x โ 2 AE) dne BE) 0 CE) 9h DE) none of the above
Given f(x) = (7x + 2x^2 )^4 , find f'(1). A) 40 B) 32076 C) 0 D) 2916 E) 44 AE) 8019 BE) 6561 CE) dne DE) none of the above
Given f(x) = (x^2 + 4)/(2x - 9), find f'(-1). A) 32/121 B) 12/11 C) 12/121 D) โ5/11 E) 25/ AE) โ1 BE) 0 CE) dne DE) none of the above
Given f(x) = 2(x + 9x^2 ), find f'(1). A) 38 B) 19 C) 40 D) 114 E) 0 AE) 2 BE) 18 CE) 20 DE) none of the above