A1
-132° лежит в 3 четверти
A2
log 2,4 (x^2 - 7x)
x^2 - 7x > 0
x^2 - 7x = 0
x = 0, x = 7
x € (-беск. 0) U (7, +беск.)
A3
6cos^2 (32°) + 6sin^2 (32°) = 6 × (cos^2 (32°) + sin^2 (32°)) = 6 × 1 = 6
A4
f(x) = 2x^5 + 13x^2 - 6
f'(x) = 10x^4 + 26x
A5
4^(5x - 8) = 64
4^(5x - 8) = 4^3
5x - 8 = 3
5x = 11
x = 2,2 (во 2-ом промежутке (0 ; 3])
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
A1
-132° лежит в 3 четверти
A2
log 2,4 (x^2 - 7x)
x^2 - 7x > 0
x^2 - 7x = 0
x = 0, x = 7
x^2 - 7x > 0
x € (-беск. 0) U (7, +беск.)
A3
6cos^2 (32°) + 6sin^2 (32°) = 6 × (cos^2 (32°) + sin^2 (32°)) = 6 × 1 = 6
A4
f(x) = 2x^5 + 13x^2 - 6
f'(x) = 10x^4 + 26x
A5
4^(5x - 8) = 64
4^(5x - 8) = 4^3
5x - 8 = 3
5x = 11
x = 2,2 (во 2-ом промежутке (0 ; 3])