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4. The number of negative integral value of x satisfying the inequality  log x + 5 2 x - 5 2 x - 3 2 < 0   is .

logx+52 x-52x-32<0Base of should be greater than zero and not equal to 1x+52>0 and x+521x>-52 and x-32Case 1: x+52>1 i.e. x>-32Using logarithmic inequality for base>1. logab<c0<b<aclogx+52 x-52x-32<00<x-52x-32<x+5200<x-52x-32<10<x-52x-32 is always true for x5. Also denominator should not be zero so 2x-30 i.e. x32x-52x-32<1x-52x-32-1<0x-52-2x-322x-32<0x2+25-10x-4x2+9-12x2x-32<0x2+25-10x-4x2-9+12x2x-32<0-3x2+16+2x2x-32<03x2-2x-162x-32>03x2+6x-8x-162x-32>03xx+2-8x+22x-32>0x+23x-82x-32>03x+2x-834x-322>0x--2x-83x-322>0Drawing wavy curve


x-, -283,  But x>-32 and x5, 32x83,  55,  

Case 2: 0<x+52<1 i.e. -52<x<-32Using logarithmic inequality for base<1. logab<cb>aclogx+52 x-52x-32<0x-52x-32>x+520x-52x-32>1x-52x-32-1>0x-52-2x-322x-32>0x2+25-10x-4x2+9-12x2x-32>0x2+25-10x-4x2-9+12x2x-32>0-3x2+16+2x2x-32>03x2-2x-162x-32<03x2+6x-8x-162x-32<03xx+2-8x+22x-32<0x+23x-82x-32<03x+2x-834x-322<0x--2x-83x-322<0Drawing wavy curve


x-2,3232, 83But-52<x<-32x-2,-32Hence complete solution set will bex-2,-3283, 55, 

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