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# consider the equation f(x)=-6-1 and g(x)=4x^2 select the solution for (fg)(x)

consider the equation f(x)=-6-1 and g(x)=4x^2 select the solution for (fg)(x)

# Newton's Law of Cooling

after the coffee is heated to 200 degrees , it is set in a room at 50 degrees.It cools at a rate that is proportional to the difference between its current temperature and that of the surrounding...

# Solve the differential equation?

Solve the differential equation e^x dx+(e^x cot(y)+2y csc(y))dy=0. M=e^x N=e^x cot(y)+2y csc(y) My=0 Nx=e^x cot(y) Obviously isn't exact. What to do next?

# Solve the differential equation?

Solve the differential equation y dx+(2xy-e^(-2y))dy=0.

# Solve the differential equation?

Solve the differential equation dx+(x/y-sin(y))dy=0. I know that the integrating factor is y. y dx+x dy-ysin(y) dy=0 d(xy)-ysin(y) dy=0 How do I integrate this?

# Find the value?

Consider the initial value problem: y'+(2/3)y=1-(1/2)t, y(0)=yο. Find the value of yο for which the solution touches, but does not cross, the t-axis.

# Find the general solution?

Find the general solution of ty'-y=t^2*e^(-t), t>0.   I got y=(t^-1)(e^-t)(t^3/3+c) but when I simplify that I didn't get the right answer. Please help me with steps.

# Recommend me a good textbook for Differential Equations?

Name the title of the book, author, edition, ISBN number. Also, what bookstore sells used college textbooks for this? And what math should I take after Differential Equations for physics and engineering...

# Solve the differential equation?

Solve the differential equation y^(4)-5y"-36y=0. r^4-5r^2-36 (r^2-9)(r^2+4) r=3, -3, 2i, -2i y=c1*e^3x+c2*e^-3x+c3(cos(2x))+c4(sin(2x)) Is that the right answer...

# Help me with Differential Equations?

Solve the differential equation y"+4y=0. r^2+4=0   r=2i, -2i Now what?

# Solve the differential equation?

Solve the differential equation (2xy+y^3)dx+(x^2+3xy^2-2y)dy=0. I got x^2*y+xy^3+yx^2+xy^3-y^2=C but that's not the answer. And is Differential Equations taught after Linear...

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# calculus question......

the position function s of a point is given by two dimensional quantities  where t in seconds and the y direction is affected by gravity (10m/s/s). y(t)=4t*sin(θ) - 5t2      ...