Q. 46.) The graph of f includes the point (2,6) and the slope of the tangent line to f at any point x is given by the expression 3x+4. Find f(−2).
Integrate slope function: To find f(−2), we need to integrate the given slope function 3x+4 to get the general form of f(x). The slope function represents the derivative of f(x), so we will integrate 3x+4 with respect to x.
Find general form of f(x): The integral of 3x with respect to x is (3/2)x2, and the integral of 4 with respect to x is 4x. We also need to add a constant of integration, which we'll call C.
Use point (2,6) to find C : So the general form of f(x) after integration is f(x) = \frac{\(3\)}{\(2\)}x^\(2 + 4x + C \.
Calculate specific form of (x): We are given that the graph of i includes the point (2,6). We can use this information to find the value of the constant C by substituting x=2 and f(x)=6 into the equation.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0. To find f(−2), we substitute f(−2)2 into the equation f(−2)0.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0. To find f(−2), we substitute f(−2)2 into the equation f(−2)0. Substituting, we get f(−2)4.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0. To find f(−2), we substitute f(−2)2 into the equation f(−2)0. Substituting, we get f(−2)4. Simplifying, we get f(−2)5.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0. To find f(−2), we substitute f(−2)2 into the equation f(−2)0. Substituting, we get f(−2)4. Simplifying, we get f(−2)5. This simplifies to f(−2)6.
Substitute x=−2 to find f(−2): Substituting the values, we get 6=(23)(2)2+4(2)+C. Simplifying the equation, we get 6=(23)(4)+8+C. This simplifies to 6=6+8+C. Subtracting 14 from both sides, we find C=6−14, which gives us C=−8. Now that we have the value of C, we can write the specific form of f(x) as f(−2)0. To find f(−2), we substitute f(−2)2 into the equation f(−2)0. Substituting, we get f(−2)4. Simplifying, we get f(−2)5. This simplifies to f(−2)6. Finally, we find f(−2)7.
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