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Maths
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The points P (2,3.6) and Q(2.2,2.4) lie on the curve y=f(x) . Use P and Q to estimate the gradient of the curve at the point where x=2 .

To answer this question you will need to recall the formula for the gradient of a straight line. Cordinates are written in the form (x​1,x2​) and (y1,​y2​)...
AY
Answered by Abdulmuminu Y. • Maths tutor
6333 Views

Solve the quadratic equation x^2 + 4x +1 = 0 by completing the square.

Completing the square means to put our equation into a slightly different form which looks like this, where a and b are real numbers:

(x+a)2 + b = 0

From here, we...

AP
Answered by Andrew P. • Maths tutor
84024 Views

Integrate this funtion f'(x)=2x +4 with respect to x (C1 integration)

Solution to Answer:

y= (2x^2)/2 + 4x + C

Therefore:

y= x^2 + 4x + C

Steps on how to do C1 Integration

y = ...

SQ
Answered by Seair Q. • Maths tutor
6531 Views

How many three-digit numbers start with a digit multiple of 3 and can be devided by 2 without a reminder?

Students are often troubled with combinatorics questions. TMost of them have never been given a proper explanation for the formulas for combination, variation, and permutation.

In the giv...

KT
Answered by Kristiyan T. • Maths tutor
1708 Views

Jack can paint a house in 5 days, and Richard can paint the same house in 7 days. Working together, how long will it take them to finish the job?

In order to simplify the problem, I will solve it without using fractions.

First,  we should find the least common multiple(LCM) of the days needed for Jack and Richard to paint a house. ...

KT
Answered by Kristiyan T. • Maths tutor
4023 Views

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