174 Answered Questions for the topic Differentiation

06/08/20

#### Is it true that there is a function that is differentiable at x= -2, but not continuous at x = -2?

Differentiation Calculus

04/07/20

#### Hi i need help solving the following

A line is drawn through the point P(3, 4) so that it intersects the y‐axis at A(0, y) and the x‐axis at B(x, 0). Find the smallest area of triangle formed if x and y are positive.

03/01/20

#### Differentiation:The Chain Rule

Given:f(2)=1f(8)=5f'(2)=7f'(8)=-3What is g(2) if g(x) = [f(x)]³

02/06/20

#### Graphical Interpretation of the derivatives

Just started a new topic, need a little help with the following:The graph of the function y=x^3+ax^2+bx+c passes through (1,1) and has turning points at x= -1 and x= 3. Find the values of a, b and c

#### Rules for Differentiation (Highschool Calculus)

Find the values of a and b so that g(x) is both continuous and differentiable at x=0.g(x){ ax+b, x > 0 1-x+x2, x (< and/or =) 0

04/29/19

#### At what rate is the water level rising?

A swimming pool is 20 m long, 5 meters wide, has sides in the shape of a right triangle, and slopes downward so that it is 4 meters deep at the deep end. Water is being pumped into the pool at 2m^3...
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#### Help Solving Calculus Problem

An apple farm yields an average of 39 bushels of apples per tree when 21 trees are planted on an acre of ground. Each time 1 more tree is planted per acre, the yield decreases by 1 bushel (bu) per...
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Differentiation

11/27/18

#### Theory of partial differentiation

WHY A TOTAL DIFFERENTIATION CAN BE RECIPROCAL BUT PARTIAL DIFFERENTIATION CANNOT BE RECIPROCALed?EX if (dx/dy)=sinp then (dy/dx)=cosecp BUT in case of partial differentiation...
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Differentiation Calculus

10/05/18

#### Suppose h = f∘g. Find h'(0)

Given that
f(0) = 5
f '(5) = -7
g(0) = 5
g '(0) = 4

Differentiation

08/10/18

#### Differentiation - Chain Rule

A cone-shaped container with a hole at its top vertex is filled with water. The cone has a 4cm radius and 16cm in height. The cone was turned upside down to the let its water flow out of container....
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#### Differentiation - are these answers correct?

Could someone help me check if I differentiated these these two functions correctly:
f(x)= √(3x2-x3)
And
h(x) = 3√(5x+x2)2
I got: f′(x) = 6x-3x2/2·√(3x2-x3)
And
h′(x) =...
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07/24/18

#### Derivatives - local extremes

f(x) = x3 - 8x2 + 5x
Compute algebraically the x-coordinates of the points on the graph of f where the tangent to this graph is horizontal.
I know how to find the derivative:
f′(x) =...
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Differentiation Math

07/18/18

#### Differentiation - Help for exam prep!

Differentiate the following function and simplify.
h(x) = x2 · √8-x
Answer = 2x√8-x - x/2√8-x
Could you show me the step by step process and which rules to use in order to...
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07/14/18

#### Differentiation

y= -x5(1 - x)
I have to use the product rule to answer this question.
The answer is 6x5 - 5x4
Can someone explain this to me and show how to solve it?
Thank you so much!

Differentiation Math

07/10/18

#### Help with differentiation - Determine coordinates of local extreme

Need help with a question on differentiation.
*Determine the exact coordinates of the local extreme(s) of the following function. Also indicate whether it concerns a local minimum or a local...
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Differentiation

07/07/18

#### differentiation

b) For the curve 𝑦=𝑥𝑒^−𝑥^2 ,𝑥 ≥0 i. Find the coordinates of the point where the gradient is 0 giving your answers exactly.ii. Show that the line 𝑦=𝑥 is a tangent to the curve 𝑦=𝑥𝑒−𝑥2 and give the...
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#### Help regarding optimization problem

In order to construct a box whose base length is 3 times the base width with volume of 50 ft^3, using materials to build the top and bottom that cost $ 10 per ft^2 and $ 6 per ft^2 for the sides....
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06/10/18

#### Proving continuity of a differentiable function.

Hi
I have been given a function f:(a,b)→R, which is differentiable on (a,b). How do I use this information to prove that f is also continuous on (a,b)?
Thanks.

Differentiation Intergration

05/13/18

#### A curve is defined for x>0. the gradient of the curve at the point (x,y) is given by dy/dx = x^3/2 - 2x

I need help with part C as i am unsure what value i should put into x to find the +C
part a + b + c: a) show that there is a single value of x for which the curve has a stationary point b)find...
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Differentiation

05/03/18

#### Find two positive numbers that sum to 4 and such that the sum of the cube of the first and the square of the second is as small as possible

Calculus, Differentiation

Differentiation

04/23/18

#### How to find the angular velocity for a system after 12 seconds and report in rad/s

A system in a lab is tested under two different conditions. The angular acceleration of the system s described by the equations: a(t)=d^2const/dt^2=10cos (5t).
Find the angular velocity of the...
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