user avatar
user avatar
user avatar
Mark Fantini
  • Member for 8 years, 11 months
  • Last seen more than a week ago
  • Brazil
31 votes
Accepted

Why learn to solve differential equations when computers can do it?

24 votes
Accepted

Great books on all different types of integration techniques

12 votes
Accepted

Given $z=f(x,y)$, what's the difference between $\frac{dz}{dx}$ and $ \frac{\partial f}{\partial x}$?

8 votes

Center of Mass, Multivariable Calculus

8 votes
Accepted

What does it mean to demonstrate "por doble inclusión" in Spanish?

8 votes
Accepted

Prove that for all real numbers $x$ and $y$, if $x+y \geq 100$, then $x \geq 50$ or $y \geq 50$.

7 votes
Accepted

Find the volume between two surfaces

6 votes
Accepted

Integrating over an area

6 votes
Accepted

Find a rigorous reference that prove the following integration by parts formula in higher dimension?

5 votes
Accepted

Tangent of implicit function (of two variables)

5 votes

having trouble with a complex numbers problem

4 votes
Accepted

Find the Vector Equation of a line perpendicular to the plane.

4 votes
Accepted

Does integration by parts work for partial derivatives?

4 votes
Accepted

Center of Mass via integration for ellipsoid

4 votes
Accepted

Evaluate $\iint_D\sin(xy)dA$ where $D$ is bounded by $y=\frac 1x, y=\frac2x, y=x, y=2x$ in the first quadrant.

4 votes
Accepted

Finding a partial derivative of a double summation.

4 votes

Geometric explanation of a contour's image

4 votes

Is $\int_1^{\infty}\frac{x \cos(x)^2}{1+x^3}$ convergent or divergent?

4 votes

Concrete examples and computations in differential geometry

3 votes

Accumulation point(s) of $\mathbb{R} \setminus \mathbb{N}$ in $\mathbb{R}$

3 votes
Accepted

Stokes' Theorem and Surfaces

3 votes
Accepted

Book for Undergrad Differential Geometry

3 votes
Accepted

$ F(x) = \int_0^2 \sin(x+l)^2\ dl$

3 votes

Volume of region bounded by $z=4 - \sqrt{x^2 +y^2}$ and $z=\sqrt{ x^2 +y^2}$

3 votes
Accepted

Stokes' Theorem/Line Integral Question

3 votes

What does directional derivative zeros imply when directional vector is not zero?

3 votes

Calculate integral applying Stokes' theorem

3 votes

Consider the region shared by ρ=8cos(φ) and ρ=4. Find the volume of the region.

3 votes

Prove that$ \int_0^\infty x^{2n}e^{-ax^2}dx = \frac{(2n-1)(2n-3) \cdots1}{2(2a)^n}\sqrt{\frac\pi a} $

3 votes

Multivariable Calculus, Two Path Test.

1
2 3 4 5 6