If (a*b=\min(a,b)), what is the value of (0*6)?
Step 1: The rule chooses the smaller value. Step 2: Between (0) and (6), the smaller value is (0). Step 3: In a minimum operation, zero is compared just like any other number.
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SubjectsMathematics
द्विआधारी संक्रियाएँ
In Class 12 Mathematics, this topic introduces binary operations as functions that combine two elements of a set to produce another element of the same set. Within the chapter Relations and Functions, students learn to identify whether an operation is well-defined and closed, represent it through tables or algebraic rules, and examine key properties such as commutativity, associativity, identity elements, and inverses. Examples involving familiar number systems help connect these ideas with broader function concepts.
TOPIC PRACTICE
Up to 20 questions from this page. Select your focus, then start.
Step 1: The rule chooses the smaller value. Step 2: Between (0) and (6), the smaller value is (0). Step 3: In a minimum operation, zero is compared just like any other number.
View question detailsStep 1: First find the difference: (9-4=5). Step 2: (|5|=5), so (9*4=5). Step 3: Absolute value gives a non-negative distance-like value.
View question detailsStep 1: (4-9=-5). Step 2: (|-5|=5), so the answer is (5). Step 3: Because of absolute value, the reversed order also gives the same value here.
View question detailsStep 1: (9*4=|9-4|=5). Step 2: (4*9=|4-9|=5), so both are equal. Step 3: When (a*b=b*a), it indicates commutativity.
View question detailsStep 1: Square both elements. Step 2: (2*3=2^2+3^2=4+9=13). Step 3: In a sum of squares, calculate powers first.
View question detailsStep 1: (a*b=a^2+b^2) and (b*a=b^2+a^2). Step 2: Addition does not change when terms are interchanged, so both are equal. Step 3: Reordering terms in a sum keeps the same value.
View question detailsStep 1: First square both numbers. Step 2: (3*2=3^2-2^2=9-4=5). Step 3: In a square-difference rule, pay attention to order.
View question detailsStep 1: The rule subtracts the square of the second element from the square of the first. Step 2: (2*3=2^2-3^2=4-9=-5). Step 3: Reversing order in subtraction-based rules can change the sign.
View question detailsStep 1: (3*2=9-4=5). Step 2: (2*3=4-9=-5), so the values are not equal. Step 3: Reversing the order and comparing values is the simplest test for commutativity.
View question detailsStep 1: For identity element (e), we need (a*e=a). Step 2: From (a+e-2=a), we get (e=2). Step 3: In such questions, first write the identity condition and then solve for (e).
View question detailsStep 1: Put (a=2) and (b=5) in the rule. Step 2: (2*5=2+5+2\cdot 5=17). Step 3: In such questions, do not miss the product term.
View question detailsStep 1: The rule first requires the square of the first element. Step 2: (3*4=3^2+2(4)=9+8=17). Step 3: Complete powers and multiplication before addition.
View question detailsStep 1: First find (5*2=2(5)-2=8). Step 2: Then (8*3=2(8)-3=13). Step 3: Always perform the operation inside the brackets first.
View question detailsStep 1: First (2*3=2(2)-3=1). Step 2: Now (5*1=2(5)-1=9). Step 3: Write every intermediate value clearly to avoid option confusion.
View question detailsStep 1: For identity (e), (\max(a,e)=a) must hold for every (a\in A). Step 2: (0) is the smallest element, so (\max(a,0)=a). Step 3: For a maximum operation, the smallest element is the identity.
View question detailsStep 1: We need (\min(a,e)=a) for every (a\in A). Step 2: (3) is the greatest element, so (\min(a,3)=a). Step 3: For a minimum operation, the greatest element is the identity.
View question detailsStep 1: For identity, write (a*e=a). Step 2: From (a+e-3=a), we get (e=3). Step 3: Cancel (a) from both sides and solve using the constant term.
View question detailsStep 1: For inverse (x), (7*x=3) must hold. Step 2: (7+x-3=3) gives (x=-1). Step 3: While finding inverse, set the result equal to the identity element.
View question detailsStep 1: Put (a*e=a), so (a+e+ae=a). Step 2: This gives (e(1+a)=0), and (e=0) works for every (a). Step 3: Quickly check the value in (e*a) also.
View question detailsStep 1: For inverse (x), (2*x=0) must hold. Step 2: (2+x+2x=0) gives (3x=-2), so (x=-\frac{2}{3}). Step 3: Bring all terms to one side and solve a simple equation.
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