Find the equation of the perpendicular bisector of A(-2,1)and B(4,-5)perpendicular垂直bisector 等分

Find the equation of the line OP /> 这么做这数学(find the equation of the tangent) Find all of the solutions of th equation cosx+cos2x=0 Find all of the solutions of th equation cosx+cos2x=0 Graph and find the slope of the following equation :Y = 100 – 20 X find the equation of the tangent at (0,2) to the circle with equation(x+2)平方 + (y+1)平方=13 Find the equation of line tangent to the graph of f(x)=e+ln x at x=1? Find the equation of the perpendicular bisector of A(-2,1)and B(4,-5)perpendicular垂直bisector 等分 find the equation of the normal at the point (1,2)to the graph y=x+1/x Find the equation of the tangent to the curve y=(x^2-5)^3 at the point (2,-1) Aand B are the roots of the equation x2-4x+6=0(i) Find the value of 1 1--- + ---A B 1 1(ii) Find the quadratic equation whose roots are -- and --A B 帮我做2道英文数学题 谢谢1.Find the equation of the line which passes through the point (6.-4).And is parallel to the line 2x-3y+3=0.2.Find the equation of the line which passes through the points P(0,A) and Q(A,2A) .3.Find the equation of urgent!if x satifies the equation sinx+cosx =√2,find the value of tan (x/2)with process find an equation for a line that is normal to the graph of y = xe^x and goes Find the equation of the locus of the mid-point of the chord ofthe curve x²+4y²=1 with gradient 1. Find an equation of the tangent line to the graph of the function f(x) = 8/(√x^2+3x) at the point (1,4) for 的用法是什么句型Find a Cartesian equation for the path of the falling cargo 为什么不用of呢?for 和of 的区别呢 1,P is the point (7,5) and L1 is the line with equation 3x+4y=16(1),Find out the equation of the line L2 which passes through P and is perpendicular to L2.(2),Find the point of intersection of the L1 and L2.(3),Find the perpendicular distance of P fr