PENILAIAN TENGAH SEMESTER (PTS)
𝓟𝓮𝓶𝓫𝓪 𝓱𝓪𝓼𝓪𝓷 𝓼𝓸𝓪𝓵 𝓟𝓣𝓢 Soal nomor 1-3 1). f (x) = k . 25x - 8 f (x) = k . 25 (2) - 8 20 = 50 k - 8 28 = 50k k = 28/50 -3k = -3 . 28/50 = -84/50 2). y - 3/2-3 = x - 1/ 0-1 y - 3 / -1 = x - 1 / -1 -1 (y-3) = -1 (x-1) -y + 3 = -x + 1 -y = -x - 2 y = x + 2 3). √8x²-4x+3 = 1/32^x-1 8 x²-4x+3/2 = 32^-x-1 3x²-12x+9/2 = -5x + 5 3x²-12x+19 = -10x + 10 3x² - 2x + 9 = 0 (3x -3/3) (3x + 1) = 0 (x-1) (3x+1) = 0 x = 1 atau x = -1/3 p+6q 1+6 (-1/3) 1 - 2 = -1