Search our library of homework questions

Top answers

All subjects

All levels

Find the x co-ordinates where the curve y=x+1 and y= x^2 +1 cross?

As they both equal y these 2 terms can be equated to each other.x+1 = x^2+1We can re-arrange this new equation, and solve for x.This equals: 0 = x^2 - xsolve for x:0 = x(x-1)so x = 1, 0.

Answered by Michael B. • Maths tutor

2728 Views

Find the integral of: sin^4(x)*cos(x)dx

This is a standard integral of the type f'(x)*f(x)ⁿ. To find the solution, we trial d/dx(f(x)ⁿ⁺¹). d/dx(sin⁵(x)) = 5sin⁴(x)cos(x). this looks similar to the int...

Answered by • Maths tutor

5177 Views

What are the properties of ionic compounds?

Crystalline solids at rtphigh mp and bpoften soluble in waterconduct electricity when dissolved in water or molten

Answered by Elena M. • Chemistry tutor

1846 Views

Solve the Simultaneous Equation: 7x + 8y = 32, x - 4y = 8

7x + 8y = 32 (let this be equation [1])x - 4y = 8 (let this be equation [2])
Make x the subject in equation [2] => x = 8 +4y (let this be equation [3])Sub [3] into [1]
7x + 8y = 32 => 7(8 ...

Answered by Bradleey C. • Maths tutor

3943 Views

When do I use the subjunctive mood in French?

The subjunctive mood is used when expressing needs, desires, preferences, emotions, possibilities, opinions and suppositions. Putting it simply, it is used when something...

Answered by Beth B. • French tutor

1192 Views