Вставьте эту формулу в Google.

2 sqrt(-abs(abs(x) -1) *abs(3-abs(x)) /((abs(x) -1) *(3-abs(x))) ) (1+abs(abs(x) -3) /(abs(x) -3)) sqrt(1-(x/7) ^2) +(5+0.97(abs(x-.5) +abs(x+.5)) -3(abs(x-.75) +abs(x+.75))) (1+abs(1-abs(x)) /(1-abs(x))) , -3sqrt(1-(x/7) ^2) sqrt(abs(abs(x) -4) /(abs(x) -4)), abs(x/2) -0.0913722(x^2) -3+sqrt(1-(abs(abs(x) -2) -1) ^2), (2.71052+(1.5-.5abs(x)) -1.35526sqrt(4-(abs(x) -1) ^2)) sqrt(abs(abs(x) -1) /(abs(x) -1)) +0.9