Joseff S. A Level Maths tutor, GCSE Maths tutor, A Level Physics tuto...

Joseff S.

Currently unavailable: for regular students

Degree: Civil Engineering (Bachelors) - Bristol University

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About me

Hi my name's Joe, I'm from Cardiff originally and I study Civil Engineering at the University of Bristol, I've just completed my 3rd year and I'm hoping to make a change and study Computer Science. 

I went to a welsh speaking school so if you're keen to go through anything in Welsh I can help with that. 

If you have any questions please feel free to send me an email and let me know what you're struggling with.

Subjects offered

SubjectLevelMy prices
Maths A Level £20 /hr
Physics A Level £20 /hr
Maths GCSE £18 /hr
Physics GCSE £18 /hr

Qualifications

QualificationLevelGrade
MathsA-LevelA*
Further MathsA-LevelA*
PhysicsA-LevelA
Civil EngineeringBachelors Degree2:1
Disclosure and Barring Service

CRB/DBS Standard

11/09/2015

CRB/DBS Enhanced

No

General Availability

Currently unavailable: for regular students

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Questions Joseff has answered

Calculate the largest share when £400 is shared in the ratio 1 : 2 : 5.

To calculate the largest share, first we need to find out how much each part that makes up a share is worth. To find out how much the smallest part is (i.e 1 part), we divide the value £400 by the sum of the shares (1+2+5) = 8, 400/8 = 50, therefore each part is £50. to find the largest shar...

To calculate the largest share, first we need to find out how much each part that makes up a share is worth.

To find out how much the smallest part is (i.e 1 part), we divide the value £400 by the sum of the shares (1+2+5) = 8,

400/8 = 50, therefore each part is £50.

to find the largest share (5) we multiply £50 by 5;

£50*5 = £250

to double check we can calculate the value of the remaining shares (2 &1) and then add them together to check it equals £400.

£50*2 = £100 and £50*1 = £50,

the sum of £250,£100 and £50 is £400 therefore we know that we have calcuated correctly

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1 year ago

2040 views

Calculate the value of 2^(–3) as a fraction in its simplest form.

To calculate the value of 2-3 first we know that a negative exponent is equivalent to the inverse of the same number with a positive exponent.  Therefore 2-3= 1/23, the next step is to calculate 23, 2*2*2 = 8, so the answer in it's simplest form is 1/8  

To calculate the value of 2-3 first we know that a negative exponent is equivalent to the inverse of the same number with a positive exponent. 

Therefore 2-3= 1/23, the next step is to calculate 23, 2*2*2 = 8, so the answer in it's simplest form is 1/8

 

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1 year ago

1131 views

Find dy/dx when y = x^2(cos(x)).

y = x2(cos(x)) therefore we will need to use the product rule,  dy/dx = u dv/dx + v du/dx where u = x2 and v = cos(x) du/dx = 2x and dv/dx = - sin(x), (don't forget the negative symbol when differentiating cosine) dy/dx = x2(- sin(x)) + cos(x)(2x) dy/dx = 2x(cos(x)) - x2(sin(x))

y = x2(cos(x)) therefore we will need to use the product rule, 

dy/dx = u dv/dx + v du/dx

where u = x2 and v = cos(x)

du/dx = 2x and dv/dx = - sin(x), (don't forget the negative symbol when differentiating cosine)

dy/dx = x2(- sin(x)) + cos(x)(2x)

dy/dx = 2x(cos(x)) - x2(sin(x))

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1 year ago

581 views
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