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The question:

The tangent to the curve

*y=ae*on the point (0,4) has the gradient k=3. Determine the values of

^{2x}+ bx*a*and

*b*.

My solution:

y' = 2ae

^{2x}+b

y'(0) = 3

2ae

^{2(0)}+b)=3

2a+b=3

b=3-2a

And this is where I don't know how to proceed...

Would appreciate some help!