@krum said:cp - 100mp - 150discount - 3xprofit/loss - 2xsay profit=>(150(100-3x)/100-100)/100*100=2x=>150(100-3x)/100=100+2x=>15000-450x=10000+200x=>x=5000/650=100/13say loss=>(150(100-3x)/100-100)/100*100=-2x=>x=5000/250=20so 20% loss
[x] denotes the greatest integer value just below x and {x} its fractional value. The sum of [x]^3 and {x}^2 is -7.91. Find x.
@sujamait said:The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined Though the matter of the existence of ghosts in that house might not be worth _____________, some observations from the neighbours may merit _____________ in the light of the deaths that have taken place there.OPTIONS1) believing, credibility2) proving, refutation3) examination, integrity4) pursuing, scrutiny
@sujamait said:The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined Though the matter of the existence of ghosts in that house might not be worth _____________, some observations from the neighbours may merit _____________ in the light of the deaths that have taken place there.OPTIONS1) believing, credibility2) proving, refutation3) examination, integrity4) pursuing, scrutiny
@sujamait said:The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined Though the matter of the existence of ghosts in that house might not be worth _____________, some observations from the neighbours may merit _____________ in the light of the deaths that have taken place there.OPTIONS1) believing, credibility2) proving, refutation3) examination, integrity4) pursuing, scrutiny
@padmanabhan1989 said:[x] denotes the greatest integer value just below x and {x} its fractional value. The sum of [x]^3 and {x}^2 is -7.91. Find x.a) -2.03 b) -1.97 c) -2.97 d) -1.7 I can't understand the Question also. Please explain the Qestion and answer.
@padmanabhan1989 said:[x] denotes the greatest integer value just below x and {x} its fractional value. The sum of [x]^3 and {x}^2 is -7.91. Find x.a) -2.03 b) -1.97 c) -2.97 d) -1.7 I can't understand the Question also. Please explain the Qestion and answer.
@krum said:greatest integer function - [4.2]=4, [5.0]=5, [-2.3]=-2 hope u get the picture{x}, should be clear[-2.03]^3+{-2.03}^2=>-2^3+.03^2=>-8+.0009=>-7.9991only this comes closest, if i'm not making any mistake
@krum said:greatest integer function - [4.2]=4, [5.0]=5, [-2.3]=-3 ?hope u get the picture{x}, should be clear[-2.03]^3+{-2.03}^2=>-2^3+.03^2=>-8+.0009=>-7.9991only this comes closest, if i'm not making any mistake
@catter2011 said:KRUM, approach for dis..The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined
@catter2011 said:A two-digit number, with non-zero digits, has its units digit divisible by its tens digit. The number is divisible by the average of its digits. How many possible values can the ratio of the units digit and the tens digit assume?
@catter2011 said:A two-digit number, with non-zero digits, has its units digit divisible by its tens digit. The number is divisible by the average of its digits. How many possible values can the ratio of the units digit and the tens digit assume?
@catter2011 said:KRUM, approach for dis..The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined
@padmanabhan1989 said:[x] denotes the greatest integer value just below x and {x} its fractional value. The sum of [x]^3 and {x}^2 is -7.91. Find x.a) -2.03 b) -1.97 c) -2.97 d) -1.7 I can't understand the Question also. Please explain the Qestion and answer.
@surajmenonv said:f(0).f(0)=f(0+0)+0.0=> f^2(0) = f(0)=>f(0)[ f(o)-1] = 0=> f(0) = 0 or 1thus (d) cannot be uniquely determinedThough the matter of the existence of ghosts in that house might not be worth believing , some observations from the neighbours may merit credibility in the light of the deaths that have taken place there.
@milestogo3 said:
@sujamait said:The real function f(x) satisfies the equation f(x) f(y) = f(x + y) + xy for all real numbers x and y. What is the value of f(0)?OPTIONS1) ˆ'1 2) 0 3) 1 4) 2 5) Cannot be uniquely determined
@sujamait said:Though the matter of the existence of ghosts in that house might not be worth _____________, some observations from the neighbours may merit _____________ in the light of the deaths that have taken place there.OPTIONS1) believing, credibility2) proving, refutation3) examination, integrity4) pursuing, scrutiny
@surajmenonv said:i think question is that sum is -7.51anyway greatest integer function [x] means u take the integer just less than x. eg : [273.8484]=273 similarly for -ve values [-4.23] = -3 (note the diff)thus observe that answer gives -7. something.this means if u have something like -8 +something...now u can get -8 only if [x] where x= something like -1.yy which will give u [x] = -2also fractional value is nothing but the decimal part (with decimal ofcourse) eg for {5.46}=.46thus if u work out answer in my opinion is -1.7 ( n i think question should be sum is -7.51 instead of -7.91)do clarify