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Tutor profile: Shivangi R.

Shivangi R.
Student at UC Berkeley, Tutor for 4 years

Questions

Subject: Calculus

TutorMe
Question:

Find the derivative of (x^3+7x+1)/x.

Shivangi R.
Answer:

I use the quotient rule for derivatives. ((3x^2+7)(x) - 1(x^3+7x+1))/x^2 (3x^3+7x-x^3-7x-1)/x^2 (2x^3-1)/x^2

Subject: Statistics

TutorMe
Question:

There are three boxes, each of which contains two coins. One box has two gold coins, one has two silver coins, and one has a gold coin and a silver coin. A box is picked at random and then a coin is picked at random from the box. Given that the coin is gold, what is the chance that the other coin in the box is silver?

Shivangi R.
Answer:

One has to use Bayes Rule to solve this problem. (1/2)(1/3)/(1/6)+(1/3) = 1/3

Subject: Algebra

TutorMe
Question:

solve the equation: -0.25 x + 1.3 = -0.55 x - 0.2

Shivangi R.
Answer:

-0.25 x + 1.3 = -0.55 x - 0.2 0.3x = -1.5 x = -5

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