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Elizabeth Phomia

Elizabeth P.

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Viewed Questions

Show that $W\left(e^{2 t} \cos \mu t, e^{\lambda t} \sin \mu t\right)=\mu e^{2 \lambda t}$

Show that $W\left(e^{2 t} \cos \mu t, e^{\lambda t} \sin \mu t\right)=\mu e^{2 \lambda t}$

Elementary Differential Equations and Boundary Value Problem

Second Order Linear Equations

Complex Roots of the Characteristic…
A thin uniform rod of length $l \mathrm{cm}$ and a small particle lie on a line separated by a distance of $a$ cm. If $K$ is a positive constant and $F$ is measured in newtons, the gravitational force between them is $$F=\frac{K}{a(a+l)}$$ (a) If $a$ is increasing at the rate $2 \mathrm{cm} / \mathrm{min}$ when $a=15$ and $l=5,$ how fast is $F$ decreasing? (b) If $l$ is decreasing at the rate $2 \mathrm{cm} / \mathrm{min}$ when $a=15$ and $l=5,$ how fast is $F$ increasing?

A thin uniform rod of length $l \mathrm{cm}$ and a small particle lie on a line separated by a distance of $a$ cm. If $K$ is a positive constant and $F$ is measured in newtons, the gravitational force between them is $$F=\frac{K}{a(a+l)}$$ (a) If $a$ is increasing at the rate $2 \mathrm{cm} / \mathrm{min}$ when $a=15$ and $l=5,$ how fast is $F$ decreasing? (b) If $l$ is decreasing at the rate $2 \mathrm{cm} / \mathrm{min}$ when $a=15$ and $l=5,$ how fast is $F$ increasing?

Calculus

Using the Derivative

Rates and Related Rates
Use spherical coordinates. Evaluate $ \iiint_E (x^2 + y^2)\ dV $, where $ E $ lies between the spheres $ x^2 + y^2 + z^2 = 4 $ and $ x^2 + y^2 + z^2 = 9 $.

Use spherical coordinates. Evaluate $ \iiint_E (x^2 + y^2)\ dV $, where $ E $ lies between the spheres $ x^2 + y^2 + z^2 = 4 $ and $ x^2 + y^2 + z^2 = 9 $.

Calculus: Early Transcendentals

Multiple Integrals

Triple Integrals in Spherical…
Explain why each function is continuous or discontinuous. (a) The outdoor temperature as a function of longitude, latitude, and time (b) Elevation (height above sea level) as a function of longitude, latitude, and time (c) The cost of a taxi ride as a function of distance traveled and time

Explain why each function is continuous or discontinuous. (a) The outdoor temperature as a function of longitude, latitude, and time (b) Elevation (height above sea level) as a function of longitude, latitude, and time (c) The cost of a taxi ride as a function of distance traveled and time

Calculus: Early Transcendentals

Partial Derivatives

Limits and Continuity

Questions asked

ANSWERED

Nick Johnson verified

Numerade educator

Find conditions on a, b, c, and d such that B = a b c d commutes with every 2 ✕ 2 matrix.

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