Математические действия

5+23=28 – five plus twenty-three is twenty-eight;

67-12=55 – sixty-seven minus twelve is (makes) fifty-five;

8×3=24 – eight multiplied by three is twenty-four or

eight times three is (is equal to) twenty-four;

18÷ 3=6 – eighteen divided by three is (equals) six;

=4 – the square (second) root of 16 is 4;

– the cube root of nine;

– the n-th root of twelve;

4² – four square (squared);

7³ – seven cubed or seven to the power of three;

() – round brackets, parentheses;

A′ – A prime; A″ - A second (double) prime;

P′₁ – P sub one prime; P prime sub one;

P₂ – P sub two; P second;

∞ – infinity;

U=x² – U is equal to (equals) the second power of x;

F=m∙a – Force is equal to mass multiplied by acceleration;

Y=f(x) – y is a function of x;

bh – a half of the product bh;

U= – U is equal to the ratio of one to one plus x square;

d²=(x1-x2)²+(y1-y2)² – d square is equal to, round brackets opened, x sub one minus x sub two, round brackets closed, square, plus, round brackets opened, y sub one minus y sub two, round brackets closed, square;

– the integral from n to m; the integral between the limits n and m;

L= – capital L equals the square root out of capital R square plus minus x square;