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I need help:Let 𝑦1 and 𝑦2 be solutions of the differential equation y''+5y^2=0. Determine by inspection if 𝑦1 + 𝑦2 is also a solution of the equation.CordiallyJorge Emilio Pérez

need help with precalclus hw

If g(x) is the f(x)=x after a vertical compression by 12, a shift left by 1, and a shift down by 4,a) write an equation for g(x): g(x) =   b) The slope of this line is:   c) The vertical intercept... more

Identifying volumes of solids rotated about regions

How would you find the volume of a solid generated by revolving the region in the first quadrant bounded by the graphs of the equations: y=0, and x=pi/2 about the line y=4?

Pre Calc AB Continuous Growth

A new app was downloaded 175 times in its first week. Since then, the number of downloads increased by 16.5% each week. a) Write a continuous exponential growth model to approximate the number of... more

Why value of A and B are different in these two methods ?

Hi everyone, I was trying to find the values of A, B coefficients by using 2 methods:method 1 by equating coefficients and method 2 by substituting different values of s.Please referee to the... more

11/30/20

Calculus Question

The base of a solid in the xy-plane is the first-quadrant region bounded y = x and y = x2. Cross sections of the solid perpendicular to the x-axis are equilateral triangles. What is the volume, in... more

10/29/20

please help on this ive tried multiple times but can't seem to get it right

Kasonga is 38 inches tall. He is 4/5 as tall as his brother. How tall is his brother?Round your answer to the nearest inch.

Solve the inverse Laplace transformation using convolutions.

F(s)=(5s-s)/(s^2 * (s+2)*(s-1))

restricted block on spring

A block of mass m = 4.5 kg slides back and forth on a frictionless horizontal track. It is attached to a spring with a relaxed length of L = 3 m and a spring constant k = 17 N/m. The spring is... more

If tan(theta)= -1, sin (theta) < 0, and theta is inbetween 0 and 360, then determine the exact value of theta

I understand how to do the question without the "sin0<0". Also I tried to answer the question and I got 0=45 and 0=135.

08/26/20

Use the Gram-Schmidt process to determine an orthonormal basis for the subspace of R4 spanned by x, y, and z.

Let x=[-4 -1 -2 0], y=[-8 -1.5 1 1], z=[10 -7 -6 23]

08/25/20

Use the Gram-Schmidt process to determine an orthonormal basis for the subspace of R4 spanned by x, y, and z.

Let x=[-4 -1 -2 0], y=[-8 -1.5 1 1], z=[10 -7 -6 23]

07/20/20

What is the average price of the commodity over the 5-week period from (t = 0) to (t = 5)? (Round your answer to the nearest cent.)

The price of a certain commodity in dollars per unit at time t (measured in weeks) is given by p=21-3e^-2t-4e^-t/3

07/10/20

Approximate the area of triangle ABC. (Round your answer to one decimal place.)

a = 15.0,     b = 70.0,     c = 60.0.

Select a function from below options so that if both sides of the equation is multiplied by the function, then the new ODE is exact.

y^2*dx+ (xy+1) dy=0 isSelect a function from below options so that if both sides of the equation is multiplied by the function, then the new ODE is exact.a.) y^(-2)b.) xc.) y^(-1)d.) x/yPlease help

06/02/20

Question 1 for lulu

The graph of a sinusoidal function intersects its midline at (0,-6)and then has a minimum point at (2.5,-9) Write the formula of the function, where x is entered in radians.

06/01/20

On a given workday, the rate in tons per hour, at which unprocessed ore arrives

On a given workday, the rate, in tons per hour, at which unprocessee ore arrives at a refinery is modeled by O (t) = 20 + 10 cos (t^2÷25) where t is measured in hours and 0 <= t <= 10. At the... more

04/24/20

question on differentiation

Ping's iStove Company produces the very popular iStove in a monopolistic market. Demand for his iStoves, and production costs, are given by the following functions:Demand: Q = 1200 − 2P ;   Costs:... more

04/06/20

quadratic word problem

The distance in feet is modeled by the equation d = - 16x2 + 96x + 112 when a ball is tossed up in the air. To the nearest tenth of a second, how long will it take the ball to reach the ground? 

determine if this function is odd, even or NEITHER

is 2x^7-x^3+2 an even, odd or neither function?

03/31/20

Find the differential dy of the given function. (Use "dx" for dx.)

y=x+1/4x-9I got -13/(4x-9)^2 but it got marked wrong. Help?

12/16/19

Find the derivative of the function. y = integral from cos(x) to sin(x) ln(8 + 3v) dv

Find the derivative of the function. y = sin(x) ln(8+3v)dv cos(x)  

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