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1. ### ALGEBRA MATRICE HELP?

...identity matrix to the left. Column 3 will display the solutions after the LHS is transformed into identity 2 by 2 matrix //// 1) r1 → r1/3 [1...

1 Answers · Education & Reference · 16/02/2014

2. ### If x^2 + y^2 = 2xy, then x must equal ?

E)y just put the values one by one in LHS n RHS n see if they are equal

1 Answers · Education & Reference · 10/02/2014

...by (x+3) (x+3)(x-2)/9 = 4 multiply both sides by 9 (x+3)(x-2) = 36 expand LHS, subtract 36 from both sides x² + x - 42 = 0 factor (x+7)(x-6) = 0...

1 Answers · Education & Reference · 12/02/2014

4. ### Solve the identity 1/(secA-1) - 1/(secA+1)= 2 cot^2A???

... the RHS now becomes 1 - cos^2A Now we have LHS and RHS as sin^2 A = 1 - cos^2A Adding cos^2A...

1 Answers · Education & Reference · 12/02/2014

5. ### Help with a proof by contrapositive?

...5x - 2 = 2m for m ∈ Z So 5x = 2m + 2 This implies LHS is even. So x is even too, i.e. x = 2n for n ∈ Z...

1 Answers · Education & Reference · 10/02/2014

6. ### How do I graph a problem such as 2x(sub1) + 3x(sub2) = 19?

...2 variables x and y. And the function is y = f(x), where LHS is some function of x. Therefore all you have is one variable...

1 Answers · Education & Reference · 07/02/2014

7. ### how do you solve ln(3x+3)=2?

...1) take exponential of both sides. Doing that gets rid of ln on LHS - 3x + 3 = exp (2) 2) subtract 3 from both sides 3x = exp(2) - 3 3) ...

2 Answers · Education & Reference · 06/02/2014

8. ### Math Question about implicit Differentiation?

...of the radical by squaring both sides x^2 = 5000 - 2p^3 then on LHS d(x^2) /dx = 2x On RHS d(5000)/dx = 0 d (-2p^3) dx = -6p^2...

1 Answers · Education & Reference · 06/02/2014

9. ### how do you solve that? (xcosx + y2/x)dx = (xsinsx/y + y)dy?

...y I also cannot tell if 2 is a coefficient or exponent on LHS. And neither can I tell what the numerator is on LHS in...

1 Answers · Education & Reference · 04/02/2014

10. ### Trig Identity Problem?

... these 2 identities and some algebraic manipulations, the LHS can be rewritten as 2cos(x)^2 + sin(x)^2 - 1 and f (x) = sqrt [ 2cos...

1 Answers · Education & Reference · 30/01/2014