Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**Christoffel****Member**- Registered: 2020-02-29
- Posts: 3

y = √67+4x-2x^2

Offline

**Christoffel****Member**- Registered: 2020-02-29
- Posts: 3

\int \:ydx\:if\:y\:=\:tan^37x.tan^27x

Determine ∫ ydx if : y = tan³7x.tan²7x

Offline

**Christoffel****Member**- Registered: 2020-02-29
- Posts: 3

Use\∂ial\:fractions\:to\:calculate\:the\∫egrals\int \frac{x^2-5x+3}{\left(x+3\right)\left(x^2+6\right)}dx

Use partial fractions to calculate the integrals of

∫(x² -5x+3)/(x+3)(x² +6)

Offline

**Bob****Administrator**- Registered: 2010-06-20
- Posts: 8,914

hi Christoffel

Welcome to the forum.

It looks like you're struggling to format your questions using a mathematical coding. What you need is LaTex. There's a good tutorial on it here:

http://www.mathisfunforum.com/viewtopic.php?id=4397

Once you've had a look at that page, please have a go at re-posting the first and second questions so we can see what you're asking.

It looks like your third is this:

If you click on this, you can see the correct coding to make the integral look right.

There's a good tutorial on partial fractions here:

https://www.mathsisfun.com/algebra/part … tions.html

The starting point is this:

If you re-combine the right hand side into a single fraction, you can compare the coefficients for x^2, x and the constant term to find A, B and C.

The integral then converts into two, each of which is a standard form. The MIF pages also have pages on calculus.

Hope that gives you a start.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

Sometimes I deliberately make mistakes, just to test you! …………….Bob

Offline

Pages: **1**