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Solve 3x - 5 = 13

Algebra can be tricky to get a hold of but once you've worked through a few questions, you'll quickly get the hang of it!The aim of this question is to find x, that means the solution will look like this: x ...
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Answered by Tutor170840 D. • Maths tutor
10025 Views

Solve D/dx (ln ( 1/cos(x) + tan (x) )

Solve D/dx (ln ( 1/cos(x) + tan (x) ) As always, we approach with a substitution method that we would normally use for differentiating ln (x). So, we try differentiate ln (t) with t= 1/cos(x) + tan(x)So we, ...
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Answered by Amera D. • Maths tutor
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Expand 5yx^2 (3x^3 - 5xy + wy^2)

To do this we must multiply each of the individual terms inside the brackets by the outside terms. Be cautious of the negative term and its corresponding sign. We will go over the method in the uploaded file.
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Answered by Ishaaq N. • Maths tutor
3745 Views

By plotting appropriate graphs, find x to the nearest integer if x^2+3=2-4x.

Plot the graphs y=x^2+3 and y=2-4x. The solution(s) are the point(s) of intersection. The graphs can be plotted by making a table of values; this is the best method for the quadratic curve. The straight line...
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Answered by Samuel H. • Maths tutor
3334 Views

let line L have the equation 4y -3x =10, and line M passes through the points (5,-1) and (-1,8), find out if they are perpendicular, parallel, or neither

L:4y=3x+10 -> y=3/4 x + 10/3. M: y= mx+ c such that it passes through the points in question, then m=(-1-8)/(5-(-1))=-3/2. As the gradient of L is not a negative reciprocal of the gradient of M, nor is it...
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Answered by Illya N. • Maths tutor
5062 Views