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Simplify (􏰀36x^−2)􏰁^ 0.5

36/x^2 = (36)^0.5/(x^2)^0.56/x = 1/6x
DY
Answered by Dila Y. • Maths tutor
8117 Views

(i) Find the coordinates of the stationary point on the curve y = 3x^2 − 6/x − 2. [5] (ii) Determine whether the stationary point is a maximum point or a minimum point.

i) dy/dx = 0dy/dx = 6x + 6/x^2 6x + 6/x^2 = 06x^3 + 6 = 0x^3 + 1 = 0x^3 = -1x = -1y = 7(-1, 7)ii) d^2y/dx^2 = 6 - 12/x^3 x = -1 6-12/(-1)^3 = 18>0 therefore, minimum point
DY
Answered by Dila Y. • Maths tutor
9247 Views

Find the Binomial Expansion of (1-5x)^4.

First I would set up how i was taught using Pascals Triange. As this is to the power of 4 the numbers across will be 1 4 6 4 1.Then I would multiply each number by the correct power of either (-5x) or (1). A...
MV
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What is the method to solve an equation of type : ax^2+bx+c = 0 ?

This kind of equation is called a quadratic or a polynomial of degree 2.The goal when faced with a quadratic is to solve it as fast as possible. We do this in two steps. First, we check if there is an easy w...
AV
Answered by Antoine V. • Maths tutor
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Integrate the function (3x+4)^2 using methods of expansion and substitution

For expansion:(3x+4) 2 =9x 2 +24x+16, go through expansion in online classroom. Now we integrate this using standard polynomial integration rules. For substitution: use the substitution u=3x+4, and use the i...
MR
Answered by Morgan R. • Maths tutor
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