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Given that x = i is a solution of 2x^3 + 3x^2 = -2x + -3, find all the possible solutions

x = i is a solution, and all the coefficients are real, so x = -i must also be a solution:2x^3+3x^2+2x+3 = 0(x+i)(x-i)(Ax+B) = 0 (we argued above that this must be the case)(x^2+1)(Ax+B) = 0(x^2+1)(2x+3) ...

BS
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Calculate the integral of e^x*sin x

1/2 *e^(x)(sin x -cos x)

Answered by • Maths tutor
3312 Views

Find the equation of the tangent to curve y=5x^2-2x+3 at the point x=0

y=5x2-2x+3 Differentiate to find the equation of the gradient of the curve
dy/dx=10x-2 Substitute x=0 to find the gradient at the point x=0
dy/dx=-2

y=50^2-2

Answered by • Maths tutor
5754 Views

Solve the equation 2x^3 - 5x^2 - 4x + 3 = 0.

In order to answer this question, the expression on the left side of the equation needs to be factorised. This can be done in three stages. 1) finding a factor by subbing in common integers (0, +/- 1, +/-...

Answered by • Maths tutor
5428 Views

Schreibe eine Einführung zum Thema: Todesstrafe ja oder nein?

Start broad and then narrow down on the question. You could start with an example that explains what the death penalty is and what the issue behind it could be. Then tease your arguments. What could be an...

Answered by • German tutor
1594 Views

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