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Factorise (x+3)(x-8)

(x+3)(x-8) x*x= x^2 x*-8= -8x 3*x= 3x 3*-8= -24 =x^2 - 8x + 3x - 24 =x^2 - 5x - 24
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Answered by Nikhitha J. • Maths tutor
4123 Views

How would I differentiate cos(2x)/x^1/2

So for this question you can use either the product rule or the quotient rule and I'll run through them both.First the quotient rule:The quotient rule says that if you have h(x)=f(x)/g(x)Then h'(x) = (f'(x)g...
GS
Answered by George S. • Maths tutor
10024 Views

Solve the equation tanx/cosx = 1 for 0°<x<360°

Firstly we need to rearrange this equation so that it contains only one trigonometric function of x (i.e. tanx, cosx or sinx) which will make it much easier to solve. We can do this in the following way: Fir...
LA
Answered by Linetta A. • Maths tutor
26043 Views

Simple binomial: (1+0.5x)^4

Expand (1+0.5x)4 , simplifying the coefficients. Step 1. Draw Pascal's triangle to find the coefficients 1 ; 1 2 1 ; 1 3 3 1 ; 1 4 6 4 1. As you can see, each row starts and ends with 1. The numbers in betwe...
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Answered by Srikka S. • Maths tutor
8384 Views

Solve Inx + In3 = In6

To solve Inx + In3 = In6 we must follow some basic log rules, log b ( mn ) = log b ( m ) + log b ( n )if we compare this with the left side of our equation, Inx + In3, we will set m = x and n = 3, mn is ther...
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Answered by Ellie B. • Maths tutor
11751 Views