math

12345678910111213
Across
  1. 3. f(x)=x^2
  2. 5. Reciprocal of cosine
  3. 7. Limit n->inf. (1+r/n)^n
  4. 9. Undefined at 90 degrees
  5. 11. Sqrt -1
  6. 12. ax^3+bx^2+cx+d=0
  7. 13. x-x^3/3!+x^5/5!-x^7/7! ...
Down
  1. 1. Name of function for decimal-containing numbers
  2. 2. d/dx
  3. 4. Opposite of combination
  4. 6. Unknown angle
  5. 8. Automatic base of a logarithm
  6. 10. Circumference/diameter