Top answers

Differentiate the following... f(x)= 5x^4 +16x^2+ 4x + 5

The rule for differentiating a simple equation such as this is, to times the coefficient by the power and the take one away from the power. Therefore, lets look at 5x^4 you would times the 5 by 4 to get 20x^...
CM
Answered by Celia M. • Maths tutor
3967 Views

Let f be a function of a real variable into the real domain : f(x) = x^2 - 2*x + 1. Find the roots and the extremum of the function f.

Let f be a function of a real variable into the real domain : f(x) = x^2 - 2 x + 1. Find the roots and the extremum of the function f.i) Root finding The function f is a 2nd degree polynomial. The root findi...
MM
Answered by Matteo M. • Maths tutor
3585 Views

Express '2x^2 + 8x + 30' in the form 'a(x+b)^2 + c'

b = B/2A = 8/(2x2) =8/4 = 2 c = C-((B^2)/4A) = 30-((8^2)/(4x2)) = 30-64/8 = 30-8 = 22 => 2x^2 + 8x + 30 = 2(x+2)^2 + 22
CC
Answered by Charles C. • Maths tutor
4636 Views

y = 2ln(2x + 5) – 3x/2 , x > –2.5 find an equation to the normal of the curve when x = -2

2x + 5y = 11
SA
Answered by Shabeer A. • Maths tutor
5463 Views

Solve the following simultaneous equations: A. 2x-2y=18 and B. 3x+y=23

Step 1: Rearrange one equation to make y the subject. In equation B, we can move the 3x to the other side, making it negative and making the equation y=23-3xStep 2: Substitute our new value for y into equati...
SM
Answered by Sahil M. • Maths tutor
4405 Views