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Member Information   Name: Toby Zandur Location: Auckland, New Zealand Age: Over 40 years old School: Member Since: 9/8/2008 About Me: Nature lover. You would be too if you lived in NZ!     TZand Administers 0 Study Groups     TZand does not administer any study groups     TZand is a member of 2 Study Groups     The History of Women 6 Members This is a study group to cover the history of women in the world and their struggle for equality. Real Estate License 432 Members This is a study group dedicated to those wishing to become real estate Sales Agents or brokers.

Member Points   Complete registration 10 Points Worth 10 points. Achieved 1 time. Author a public question 120 Points Worth 5 points. Achieved 24 times. Create an exam that is taken 25 times 600 Points Worth 300 points. Achieved 2 times. Create an exam that is taken 100 times 1600 Points Worth 800 points. Achieved 2 times. Total 2,330 Points How Points Work     TZand Administers 2 Exams     Calculus Founded by TZand This is a calculus exam where one will need to know the quotient rule, the chain rule, and the product rule. Details Trees - Easy Founded by TZand This is an easy exam covering various trees. I have added pictures to each question to help show the beauty of each tree. Details

TZand’s Activity     TZand Founded the exam Calculus which has been taken 100 times TZand Founded the exam Trees - Easy which has been taken 100 times TZand Founded the exam Calculus which has been taken 25 times TZand Founded the exam Trees - Easy which has been taken 25 times TZand Added the question A little girl buys a spherical balloon of total volume 1 cubic foot. She starts blowing to fill the balloon at a rate of .1 cubic feet per minute. How fast is the radius of the balloon increasing when she has the ballon halfway blown up? to the exam Calculus TZand Added the question Implicitly differentiate at (1,1). to the exam Calculus     TZand has Authored 24 Questions     Authored by TZand Please solve the following: A. B. C. D. Replace 6 with 2 · 3, so 620 = (2 · 3)20 220 · 320 Now just collect the powers of 2 and 3 and subtract the exponents: Details | Answer Authored by TZand Implicitly differentiate at (1,1). A. -3/14 B. 3/14 C. -4/12 D. -12/4 We differentiate term-by-term to get . Substituting x=1, y=1 we get 4 + 2 y' + y' + 9 y'=0, so y'=-4/12 Details | Answer Authored by TZand A little girl buys a spherical balloon of total volume 1 cubic foot. She starts blowing to fill the balloon at a rate of .1 cubic feet per minute. How fast is the radius of the balloon increasing when she has the ballon halfway blown up? A. B. C. D. The relationship between radius and volume for a sphere of radius r is , so we differentiate implicitly with respect to t to get the relationship for the rates . The balloon is half full (one half of a cubic foot) when , which we solve to get , and we have that so we have which we solve to get Details | Answer Authored by TZand Suppose the position of an accelerating bobsled is given by feet . What is the acceleration of the bobsled when t = 1? A. B. C. D. The acceleration is given by so when t=1the acceleration is Details | Answer Authored by TZand Which of the following options is NOT a derivative of y = (1+2x)4/5 A. y'(x) = (2) (4/5) (1+2x)-1/5 =(8/5)(1+2x)-1/5 B. y''(x) = (2)(-1/5)(8/5)(1+2x)-6/5 = (-16/25)(1+2x)-6/5 C. y'''(x) = (2)(-9/25)(-7/5)(1+2x)-11/5 = (197/125)(1+3x)-11/5 D. y'''(x) = (2)(-16/25)(-6/5)(1+2x)-11/5 = (192/125)(1+2x)-11/5 y'''(x) = (2)(-9/25)(-7/5)(1+2x)-11/5 = (197/125)(1+3x)-11/5 is not a derivative of y = (1+2x)4/5 Details | Answer Authored by TZand Differentiate the following function: A. B. C. D. Using the quotient rule we find that, Hence, Details | Answer View All 24 Questions TZand Has Authored