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Find the turning point of the line y = x^2 + 2x -1

d(x 2 +2x-1)/dx = 2x+2when dy/dx = 0, x = -1when x = -1, y = -2 therefore the turning point is (-1,-2)
EO
Answered by Ebun O. • Maths tutor
5264 Views

Solve the following simultaneous equations: 2x + y = 17, x - y = 4

2x + y = 17 x-y = 4 ---> x = 4 + y2(4+y) + y = 17 ------> 8 + 2y + y = 17 -----> 8 + 3y = 17 --------> 3y = 9 -----> y=3 x = 4+y ------> x = 7
GN
Answered by Gavra N. • Maths tutor
6082 Views

Solve the following simultaneous equation: 3x+y= 11 and 2x+y=8.

X= 3y= 2
LD
Answered by Lara D. • Maths tutor
4469 Views

Evaluate the integral (write on whiteboard, too complicated to write here)

Make sure integral is in terms of sines and cosines onlyFactor out sine of numerator and make fraction in terms of cosineSubstitution y=cos(x)Fractions decompositionAnother 2 substitutionsSolve
GL
Answered by Gemma L. • Maths tutor
3906 Views

How do I solve an equation with both x and y variables (simultaneous equation)?

A simultaneous equation is calculated to find the pair of co-ordinates where two straight lines cross on a graph, so the question you've probably been asked is to 'solve' a pair of linear equations. This mig...
TD
Answered by Tutor127404 D. • Maths tutor
3812 Views