Найду корень уравнения: tan(x)=-(5/2)
x1 = -4.33188260327232
x2 = -45.1725870999396
x3 = 1.95130270390726
x4 = 155.889342729807
x5 = 80.4911190436521
x6 = 36.508821893395
x7 = -7.47347525686212
x8 = 30.2256365862154
x9 = -340.48229653738
x10 = -82.8716989430172
x11 = -155.128329975582
x12 = -114.287625478915
x13 = -20.0398458712213
x14 = -117.429218132505
x15 = 58.4999704685235
x16 = -13.7566605640417
x17 = -86.0132915966069
x18 = 67.9247484292929
x19 = 27.0840439326256
x20 = 23.9424512790358
x21 = -76.5885136358376
x22 = -151.986737321993
x23 = 89.9158970044215
x24 = 8.23448801108685
x25 = 259.56190029827
x26 = -98.5796622109661
x27 = -1.19028994968253
x28 = 52.216785161344
x29 = 102.482267618781
x30 = -42.0309944463498
x31 = 77.3495263900623
x32 = 441.774274206478
x33 = -29.4646238319907
x34 = -26.3230311784009
x35 = 14.5176733182664
x36 = -57.7389577142988
x37 = 61.6415631221133
x38 = -79.7301062894274
x39 = -64.0221430214784
x40 = 83.6327116972419
x41 = 74.2079337364725
x42 = -35.7478091391703
x43 = -10.6150679104519
x44 = -51.4557724071192
x45 = 96.1990823116011
x46 = -73.4469209822478
x47 = -70.305328328658
x48 = 86.7743043508317
x49 = 45.9335998541644