6,196 Answered Questions for the topic calculus

9h

#### Cartesian equation

Vector (4,5,-1) is perpendicular to the plane that contains point A(2,9,6). Find the Cartesian equation of this plane.

18h

#### A LEVEL MATHEMATICS

An infinite geometric series has common ratio r. the sum to infinity of the series is 7 times the first term of the series. Given that the first term of the series is 15, find the least value of n... more

20h

1d

#### I need help with finding values please!

How can I find the value ofif  and ?

1d

How do you evaluate ?﻿

1d

Evaluate Options: 10.5 12.5 23 25

1d

1d

#### Write the Riemann sum to find the area under the graph of the function f(x) = x^4 from x = 5 to x = 7.

Question options: 1) 2)  3)  4)

1d

#### Write the integral that has the same value as the limit

The Riemann sum,  , is equivalent to  with  .Write the integral that produces the same value as  . Question options: 1) 2)  3)  4)

1d

#### If the area under the curve of f(x) = 25 - x^2 from x = -4 to x = 0 is estimated using four approximating rectangles and left endpoints, will the estimate be an underestimate or overestimate?

Question options: 1) Underestimate 2)  Overestimate 3)  The area will be exact 4)  The area cannot be estimated with just four rectangles

1d

#### Write the summation to estimate the area under the curve y = 2x^2 + 1 from x = 0 to x = 4 using 4 rectangles and left endpoints.

Question options: 1) 2)  3)  4)

1d

#### List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Question options: 1) 2, 4, 6, 8, 10 2)  1, 3, 5, 7, 9 3)  0, 2, 4, 6, 8 4)  1, 2, 3, 4, 5

1d

#### Which of the following sums does not equal the others?

Question options: 1) 2)  3)  4)

1d

#### The acceleration of an object moving in a strange way has been modelled as a = e^x x.

The acceleration of an object moving in a strange way has been modelled as a = e^x x. A) use integration by parts to find an equation to model the velocity v if v = ∫ e^x x dx (the x is the letter... more

1d

#### PMI Proof Pre-Cal II (Help!)

Using PMI, prove 1 + 1 +... + 1 = n-1 For n > 2 1*2 2*3 n(n-1) n

1d

#### Is the function True or False

Which of the following is true for  ?Question options: 1) There is a removable discontinuity at x = 3. 2)  There is a non-removable discontinuity at x = 3. 3)  The function is continuous for... more

1d

#### find a,b such that the limit as x approaches 2 (x2+ax+b)/(x3-2x2+x-2 ) = 6

Note: (x2+ax+b)/(x3-2x2+x-2 ) = (x2+ax+b)/[x^2(x-2)+1(x-2)] factor by grouping = (x2+ax+b)/[(x^2+1)(x-2)] as it stands, there's a discontinuity at x=2 since if you were to plug in x=2, the... more

2d

#### List discontinuities for function

List the discontinuities for the function f(x) = cot(  ). Question options: 1) n(  ), where n is an integer 2)  n(  ), where n is an integer 3)  n(  ), where n is an integer 4)  There are... more

2d

#### Is the function continuous

Is the function  continuous? Question options: 1) Yes 2)  No

2d

#### Find where equation is discontinuous

Where is  discontinuous? Question options: 1) f(x) is continuous everywhere 2)  1 3)  1, 4 4)  4

2d

#### Find value where f(x) is continuous everywhere

To two decimal places, find the value of k that will make the function f(x) continuous everywhere. Question options: 1) 1.88 2)  9.00 3)  3.76 4)  None of these

2d

#### Find limit using direct substitution

Find the limit of the function by using direct substitution.Question options: 1) Does not exist 2)  −6 3)  6 4)  0

2d

#### Find lim x --> 25

What is ?Question options: 1) 0 2)  -10 3)  1 4)  Does not exist

2d

#### Find lim x --> -2

What is ? Question options: 1) −∞ 2)  ∞ 3)  0 4)  −2

## Still looking for help? Get the right answer, fast.

Get a free answer to a quick problem.
Most questions answered within 4 hours.

#### OR

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.